None
Se2... Ra (XXTV)... Ba (II)... Du... OS (IX)... En (1674)... A (Mem. Accad. Sci.)...A (1033, 1114)... J (I, n)...WS2...Sk... Sp(n)... Per (2748)... Flm...Pt...Do (Tram. R.I. Acad. XXTX, Part 13)... Do (3023)...Cin... Cin5... Hayn (3051)... Lvl...Jones (A.J. 313)... HI (II)... Glasenapp (I)... Maw (II)... Searle (A.J. 399)... Hu (A.J. 397)... Annalt Toulouse Obsy. m...Boeger (A.J. 532)...Ski...Giacomelli (III)...] 7434. 2 1986. 1866.71 1898.40 Fixed. 93-9 93-2 [Ma(i*\ 5.1)...Ma  [Hu (Bui. L. O. No. 57). With one later measure, the mean is: 340^3 2f4o 3" Hu 1 7437. H 1281. "Caught in a glimpse. The small star requires the most cautious illumination, and turning the eye aside." I could not see the companion with the 6-inch on two occasions in 1875. The only measures are: 1890.36 229°8 35'i2 i« p 6.5...12.0 1901.29 231. 1 34-4° [0 (30A8)(Pub. L. O. II)...05... ] 7. 1...11.0 7438. 02 3°* (= H 576.) Unchanged. 1868.66 5i?5 28T67 4« A 1898.34 51.7 28.68 1866.86 264?! 2.65 3» A 1887.48 261.8 2.70 3» HI '9°3-35 260.7 2.58 2« Do Se...Se2...Ra(XXV)...F1m...Du...WS....d(I,II) .Big...Per...Per (2748)...HI (II)... Glasenapp (I, III) ...Big (Bui. Ast. XII, 290)... Knorre (3300)... Ebell (3321)...A. C. Leipzig, p. 209...Annals Toulouse Obsy. HI...Do (3931)...] [M*(F. 5. 1)...Ma (XI). ...J (1209)... Sp (II) 7441. 2 1987. (= 9 III. 103 - Sh 21a.) Fixed. s« is 1867.46 323? 1 10. '39 4« A 1890.38 322.4 10.24 5« Giacomelli [Ma(f. S. I)...Ma(XI)...Se...Ra(XXn)...J(ii»5)...J(I,n)...T(a8o8)... Giacomelli (HI)... Glasenapp (I)... ] 7442. X- Coronae Borealis. J VI. 94. (= a 499.) The 5° principal star has a proper motion of 0.091 in 23.4 (Auwers). The only other measures are: 1879.29 64.3 98.34 in 1904.38 64.5 97.16 2.5 5.0...9.5 7443. H 2798. "A third, 10-1 1 m, near." C is DM s» 35 (17°) 2936. AB 1873.50 30?4 A 11. 0... II. 5 AC 1873.50 351.3 58.49 in A... 9.0 [A (I, p. 363)...] 7444. ir Scorpii. p 622. Distant companion noted with 51 3* the 18-inch. The large star has a proper motion of 0.56 in The direction of 234.3 (Auwers). B is probably only an optical companion. 1892.39 132.2 50.41 3.5 1899.44 132.2 50.21 in p 1901.41 131.9 5°-47 2.5 [0 (X)...0 (3ui)(Pub. L. O. \T)(Pub. Y. O. I)... Doolittle (Pub. FUnoer Obsy. II) 7448. 2 1997 rej. Nothing but this since Struve: 1905.29 343?9 1.5 8.5... 10.8 52 10: 7449. Sh 213. (= a 498.) The companion is SD (19°) 5.4 274. Probably fixed. 1880.38 319° 17.75 2« p [H (Vm)...Clin...Cin...Wilson (Cinco)... Coronae Borealis. A. G. Clark 7. Discovered by Alvan G. Clark with the Washington 26-inch. The principal star has a proper motion of 0.17 in 237.9 (Auwers), and the companion evidently has the same movement. The other measures are:  4« H2 ...13 1895-67 349-8 1.96 2« Bar 1903-37 359-8 1.87 2» P ...11.0 1905.36 351-9 2.00 I» A 1859.49 59-8 2?05 in Se 1868.20 62.1 2.10 4« A 1879.29 58-7 2.24 2n Cin 1890.39 66.0 2.72 2« Glascop (I) A (3639)...] 7456. Big. Hz(xn)...] 7460. 2 1996. Without change. 1868.72 109.5 19.55 [Ma(/?. S.I)..:Ma(XI)...CinV..] 3« In A Cin 7461. 2 1990. (= 9 I. 81 = 5 675.) A, B, and C of 53m43' 2 are respectively C, B, and A of I?. There is some confusion in the letters used by modern observers, arising probably from Struve giving the angle of CB instead of BC. A and B 1867.94 59-7 56 '39 1885.42 59.2 56.36 1897.50 59.8 56.60 C and B 1868.03 2084 3?79 1885.42 207.3 4-°5 1897.50 207.3 3-75 A and C 1866.86 57?2 59^93 1897.50 57.9 60.20 [Ma(F. 5. 1)...Ma(XI)...Hl...D(H)...Per (a748)... Glasenapp ( V)... Knorre (363a)...Annals Toulouse Obsy.m...] 211 A 2« Per 2« Gla 4» A 3" Per 2« Gla 3" A 211 Gla 7462. [Pub. Washburn Obsy. II.. .Com (VI)...] 53 45 7463. See 257. Later measures give : ss 4* 340^6 6^26 3« 341.7 6.39 3« [See (A.J. 431)... Cogshall (.4. /. 505) ...Doolittle (Pub. Flower Obsy. IT) .. .] 1899.19 1902.38 Cg Doo 7465. See 260. Later measures are: 1899.44 23?! 5'9& 3" 1902.42 24.2 6.13 3« [See (A.J. 431) ...Cogshall (A.J, 505) ... Doolittle (Pub. Flower Obsy. II)...] 54 *o Cg Doo 7466. 2 1993- (= 9 V. 126 = Sh 214.) There is a very decided change in the distance from proper motion. As the angle remains constant, the components will form finally a close pair. The measures give an annual movement of about 0^076 in the direction of 38°. 1783.60 37?9 37-88 Iff W 1823.45 36.6 34 -92 21! Sh 1831.76 37-7 33.96 3« 2 1840.79 38.0 33-39 3» 02 1865.43 37-9 31-53 5» A 1875.47 38.2 30.5t In 02 1884.51 39-0 30.00 5" En 1885.44 38.6 29.98 4» Per 1888.50 38-7 29.73 3« H2 1895.42 38.5 29.28 2« Gla 1897.82 38.7 29.20 6n Doo 1903.35 38.9 28.61 211 Do 1905.16 38.8 28.35 2n P [Mi(f. 5.11). ..HI.. .H (V)...OS(IX)(X, pp. 3r >74)-. A (i57»).. Flm...Slt«...Pt.. Per... Per (274 8)...En(*74 i)...G asenapp (F A (11). little (Pub. Flower Obsy. I).. .Hi (XII). ..Do (3931) .. .£«. .. ] 699 15* Burnhant: General Catalogue of Double Stars 54 »5 54 3> 54 36 54 51 54 54 54 54 55 7467. See 261. Discovered by Cogshall. 1900.44 I3?6 io?33 3« [See (A. J. 431) . ..Cogshall (A. J. 505) . .. ] Cg 7469. 2 1994 rej. This is a faint pair in the field with 2 1993; and is the 9.0 m star, DM (17°) 2945. It is not in A. G. Berlin. The star there called by this DM number is one of the components of 2 1993. S 1994 rej. is nearly 5' distant from S 1993. 1905.12 339?o 2ir5o i« /96 9.3. ..10.5 7470. H4826. 1880.42 247^9 5. '02 Neat star." Only this later: 2» Cin6 9.0. ..9.8 30 7471. 2 1992. Change is uncertain, before Struve are obviously unreliable. The following are all the measures: The observations 1828.48 33°°o 3 '5 in H 1830.27 328.9 6 85 i« H 1831-53 329-9 5 7i 3« S 1843.34 328.6 5 63 In Ma 1856.42 326.8 5 99 2» Se 1865.93 327-7 5 86 IK Se 1867.45 325-4 S 74 3« A 1888.15 324.8 5 95 3" HS 1896.47 325-8 5 89 3» Lv 1896.53 325-0 5 60 2K Soul^ 1897-37 324-4 6 17 3» Doo 1898.40 326.7 5 93 2« Gla [Ma(F. S.I)...Ma(XD...Hl...Se... SeJ... J (II) .. . Lv (A. J. 407) .. . HS (XII)... Soule {A.J. 410) .. . Glasennpp (V) .. . A. G. Leipzig, p. 209.. . Doo- little (Pub. Flower Obsy. I) .. . ] 7472. p 623. Discovered with the 18 >£-inch. No rial change. mate- 1878.68 1888.27 1900.27 1900.54 1905.16 236^8 237-8 235-7 236.2 235-6 0-99 1 .01 1.12 0-99 0.94 3" i» 4« 3" 3« Cin Lv Doo A Doo [0 (X)...01... Cin 5... Lvl ...Glasenapp (I) ... little (Pub. Flower Obsy. I, II) . . . Biesbroeck. A (Bul.L. O. No. 11) 7473. Ho 400. A later measure is: 1903-37 1232°8 1032 3 [Ho (3=34)...] 7474. 2 1995. Without change. 1866.72 3H-5 1577 1902.41 312.2 15.52 3" 2« Doo A Ku fMa(XI, XV). (3821)...] . Ma (F. S. I).... A (11).... A. G. Leipzig, p. 209.. Kustner 7475. Hu 659. With a later measure, the mean is: 1904-33 244°2 0^41 3« Hu 8.8...11.0 [Hu(Bu/.L. O. No. 57)--] 7476. P 37. Discovered with the 6-inch. No  8. 8... 10. 2 1903.47 43.5 2.77 2» A [(J (D...0 (Mot. A^/.XXXm.35i)...0 (3114) (P*t- L. O. II)...Lv (A.J. 278) [(Proc. Haverford Coll. Obsy. 1893)... Doolittle (Pub. FUrwtr Obsy. I)...) 7477. 02 303. Slow direct motion in angle. The best of the measures are inconsistent in both angle and distance, and indicate nothing as to the character of the relative motion. 180° 55 A 1873.28 130. 1 0.72 4» A 1875-45 134-4 0.77 1« OS 1881.99 134.0 0.80 6« HI 1885.41 1369 0.91 in Per 1887.47 137-4 0.64 5« Sp 1889.67 139-3 0.86 4" HS 1893.46 140.8 0.60 i« Ho 1895.44 136.2 0.72 2» Gla 1898.29 '44-3 0.88 3» Hu 1898.96 140.0 0.78 6« Bowyer 1901.44 145-8 0.77 3» Gr. Obsy. 1901.56 148.9 1. 00 3" Doo 1902.46 141. 2 0.83 bn Gr. Obsy. 1903-39 149.4 0.81 2« Do 1903.40 144.2 0.80 M Bowyer 1903.46 146.8 0.70 2« Biesbroeck [Ma (XI)....Se....OS (IX).. Do (Trans. R. I. Acad. XXIX, Part 13)....Do (2307,2330,3023,3023,3680, 3931)... PI.. rim... Ski... W\(Wash. Obs. 1884) ... H1(I,II)... Per... Per (2749)... Sp (2133)... Sp (II, U App )... A (I)... En (2742)...Callandreau (Bui. Ast.TH, 523)...T (2866)... Maw (I, HI, IV) Ho (3234)... Big (Bui. A st. XII, 299)... Glasenapp (IV)... Greenwich Obsy. (Mon. Not. LIV, 317; LIX, 400; LX, 506; LXI, 486; LXII, 383; LXIII. 403; LXIV, 801)... Brown (3645)... Hu (Pub. L. O. V)... HS(XII) H Biesbroeck Doolittle (Pup. Flower Obsy. II) Notes to the Catalogue Notes to the Catalogue Discovered with the 6-inch. 1880.48 351-5 In Cin Cin 8.5. 1891.49 352-9 4.52 P 7-7- 1901.69 35° -2 4.72 Doolittle (Pub. L.O.D) Doolittle (Pub. Flower Obsy. II) Unchanged. 10.0 9-2 Cin Cin 7479. H V. 75. (= o" 502.) Change from proper motion. Near  7480. p Coronae Borealis. S 676. (= 9 VI. 93 The principal star has a large proper motion: 180 o" 503) Auwers 0.815 in 196. 1 Measures, 1853-1903 0.795 in 194-8 ,-Tt>3 270 SCALE p Coronae. S 676 The last value is from the five sets of measures by OS, H2, L, and §. The following are all the measures: [OS (X) 178327 I44?4 87-53 i« m 1825.48 125. 1 79.19 3« s 1853-83 108.8 74-23 3" OS 4.7. •9-7 1866.66 100.8 74.70 i« OS 1879-39 92.8 75-99 in Cin 6.0. .8.5 1883.47 90.9 76.61 3« HS 1896.49 83-7 79-99 3» Lv 6.0. .9.2 1903.20 80.0 81.29 3» P .9.6 ...Cin 5... L^ (A.J.+oj)...06... 7482. 02304- small star 18 in. 1866.56 1898.31 [Ma (XI, XIIT)..OS (IX) (= H 1285.) Unchanged. H called the 56m4o' 175?0 10.73 3" Hu .. J (I)... Glaaenapp (IV)... Hu (Pub. L.O.V)...] 7483. A. G. 200. Double in A. G.Lund. Measures by F'. 56 56 7484. 2 2001. Fixed. 1868.02 169.6 [Ma (f. S.I)... A (II)...pi...Cin5.. 7486. 2 2000. Fixed. 1867.47 229^4 1895.42 229.3 [Mz(F. 5.1)...Ma (354)- .Se •47 ■93 • 96 2f58 2.74 J (II). 4" A P Hu 4« 2« A Gla .Glasenapp (IV). 1876 Doberck 95.90 A. N. 2 121 1887 Schorr 105.19 Dissertation, Munich, 1889 1895 See 104.0 Evolution of the Stellar Systems 1904 Aitken 44-5 Bui. L. 0. No. 80 The following fifty selected positions are shown on the diagram: A and B 1825.47 35&-0 15 3" S 1832.46 4-4 1. 21 3" S 1834-50 7-8 1. 17 8m Da 1835.00 7-7 1.23 2» S 1836.49 8.1 1. 16 4» s 57 10 57 8 7487. f Scorpii. 2 1998. (= 9 I. 33 = 5 II. 20 = Sh 57 46 216.) A most interesting triple system. It was discovered by Sir William Herschel, and since that time the companion has made about two and one-half revolutions around the primary. The first observations of lit and S were made when the components were separated nearly the maximum distance. For fifty years all the computers who investigated the orbit, with a single exception, placed all the observed positions subsequent to 1856 in the wrong quadrants. Thiele in 1856 gave the correct position of the apparent orbit, and found an approximate period of 49 years. The later investigators down to 1895 all placed the companion in the second and third quadrants during the forty years preceding the last named date, and this was assumed to be the correct distribution of the observed positions until a more careful investigation was made by Aitken in 1904, when it appeared beyond all question that the companion had never been seen or measured by any observer except in the first and fourth quadrants, and that the period could not differ much from 44 years. The system has a proper motion of 0.097 in 258.8 (Auwers). The following orbits have been found from measures ending with the respective dates in the first column: 1846 Madler 105.52 yrs. Fixstern-Syslem I, 256 1856 Thiele 49-05 A.N. 1199 1875 Flammarion 98.00 Quar. Jour. Sci. Jan. 1876 701 15* Burnham: General Catalogue of Double Stars 1837-51 1840.18 1840.57 1841.57 1842.42 1843.00 1846.47 1848.54 1852.98 1855.55 1856.58 1865.54 1867.45 1868.40 (1869.51 \ 1869.52 (1870.39 I 1870.54 5 187141 ^1871.60 (1872.46 / 1872.53 1873-43 1874.49 (1875.44 1 1875.51 (1876.45 I 1876.52 (1877-43 I 1877.55 [1878.03 j 1878.46 I1878.54 (1879.50 I 1879.56 1880.54 (1882.54 1 1882.88 1883.55 (1884.50 1 1884.54 1885.53 (1886.55 1 1886.57 1887.54 1888.56 1892.58 (18953' < 1895.53 (1896.48 / 1896.65 1897.59 1898.17 (189935 i 1899.42 1900.54 1901.47 1903-55 1904.40 1905-38 I2?5 17-9 22.2 25.9 20.4 23.8 24.0 30-5 46.5 53-6 69.7 336.9 340.7 345-1 352-5 348.2 349-8 353-3 353-1 354-8 353-8 357-4 356.8 358.7 0.5 2.0 1.8 3-6 3-3 4.0 6.8 6.2 6.1 8-5 6.8 9.0 n. 8 13-2 13-5 14.6 15.0 16.2 17.2 18.0 19.6 20.6 26.5 30-3 33-4 35-4 37-6 39-8 42.6 48.4 47.2 52.3 62.2 90.5 123.2 187.8 1 09 1.22 1.09 0.97 1.05 1. 17 O.97 1. 19 0.93 0.47 0.5I o-57± 0.83 0.90 0.83 0.88 0.89 0.88 1.06 0.88 1. 12 0.96 1 .19 1.05 1. 10 1. 18 1. 21 1. 18 1.20 1.25 1. 12 1.22 i-3i 1. 17 1.29 1.24 i-3i 1.22 1.24 1.28 1.26 1-34 1. 19 1.07 1. SCALE I Scorpii. Z 1998 [Ma(.F. S. 1,256)....Ma (X, X, XI)... 21... BM(a8o)... HI... HJ...H (Vm)...Mh...Mh(Sirf. J/MJ.Sept. 1846)...Dal...Da3...D«»... Da...Thiele(u«9)...K...K(isi9)...JS...J»...WJi...Pl... } (Men. Not. XVIII, 317)...Wn (V)...Wn (1738)... Ra (XXI)... Se...Se»... Se (1017, 107a, 16i«)(M>«. Not. XXVI, 63)...Hd...Ba (m,IV)... Kn.. WS ...WS»...Gl...Pl...Sk...Sk«...Sk«...OS(IX)...J (Mem. Accad. SV«".)... J (1033, 1114, 1474. I57»i«735.«799. 1886, 1079, 3080, 3193)... A (I, II)... has a triple 702  172). Do (2x07, 2121, 2108, 2433, 3023, 3680, 3931). Sp (2133). Sp (1, II, II App.).. Nobile (Rend, delta R. Accad. Sci. Napoli, Dec. 1877) Fen Du En (1518, 1674, 2677, 2742, 2786) HI (I, II) (A.J. 302)... Je (2351)... Pt. Kustner (2584). Per...Per (2529, 2685)... 0 2...03...0 (Mon. Not. LI, 391).... Cin3....Cin5....Cin6....Lvl.... Wilson (CinlO).... T (2866)...Collins (Proc. Haverford Coll. Obsy. 1891)...Jones(/f./. 312... See (Beol. Berlin No. 6, 1892)...Schorr (Uniersuchungen, etc., Sternsystem (Sophia, Miinchen, 1889) Glasenapp (I, HI).... Scott (Brit. Asl. Ass'n V, 75 (Mon. Not. LIX, 427; LXIV, 52)... Sp (TO)... Maw (H, HI)... Big... Big (Bui. Asl. XH, 299)... Giacomelli (HI)... Everett (Mon. Not. LVI, 464)... Com(X)... Schwareschild (3335)... Lv (-4.7.382)... Hu (A. J. 397)... Pritchett (A.J. 397)... Wagner (A.J. 410)... Sola (3529)... Brown (3645)... Coleman (Mem. R.A.S. LHI) Annals Toulouse Obsy. HI Jouffray (Bui. Ast. XXI, 299).... Biesbroeck.... Salet (Bui. Ast. XXII, 108).... See (A. J. 349, 378) (Evolution of the Stellar Systems) A (3585, 3639) (Bui. L. O. No. u)(Pub. A.S.P. XVII, iu)(Bul. L. O. No. 80)...Doolittle (A.J. 416)(Pub. Flower Obsy.l)...Lohse (Pub. Potsdam Obsy.)...) (See p. 1077) 7488. 2 1999. (= $ II. 21 = JJ N. 4= Sh 215.) Near (S Scorpii. Perhaps a little increase in the distance. Dembowski measures A of this pair and AB of 2 1998, i6o?i : 280^78 (1866.55) 7»- 1866.04 1878.57 1890.39 1896.48 102^1 101.4 100.7 10:52 10.87 11.04 11.10 3» bn 4» 3» Sp Giacomelli Hu [Ma(f. S. I)... Ma (X, XI)... HI... H (VTH)... Mh... J»... Pi... Hd...Ra (XXTV)...Se...Se(ioi7)...Du...Kii...Hl (Wash. Obsns. 1863)... A (1125, 157a).... A (I,n)....Cin5....Sp(H)....Per(2529, 2685).... Giacomelli (HI)...Collins (Proc. Haverford Coll. Obsy. 1891)... Glasenapp (I) Ha (A.J. 397) Knorre (3518).... Annals Toulouse Obsy.JU.... Jouffray (Bui. Ast. XXI, 299)... ] 7489. 2 2003. No material change. 1866.09 171. 8 14.48 in Hu I)...Ma (XI). -A (11). .Cin6...J 7490. panions. 2 2006. Some change in the positions of both companies. 1852.33 1869.32 1878.84 1897.69 1898.66 1903-31 1830.62 1868.47 1879.26 1894.47 1897.69 190331 204?5 199.9 97-4 195.0 193-5 193-2 193-3 A and B 1661 1.72 1.65 1.72 1.61 1.52 1.49 A and C 223-7 221. 1 219.6 219.0 218.8 218.2 43-54 44-31 44.58 45.02 45-05 45.18 3» 2» 5» 2« 3» 2« 4» in 3» 2n S Ma A P Doo Maw Do 2 A P Big Doo Do (Ma (F. S,.I,n)...Ma(XI,Xm)...J (2194)...J (H)... Flm...01...03. (Bui. Ast. XH,  7491. 2 2004. 1866.45 1902.36 Ma(X). Fixed. 277?2 279.2 ir78 i-77 3» in A Hu [ Ma (F. S. I) 506....] .. A (H).... Cin6.... Greenwich Obsy. (Mon. Not. IX, 7493. p Scorpii. 0 947. (AC = 9 III. 7 = Sh 217.) The close pair was discovered with the 18-inch. The measures do not indicate any material change, but it is a physical system, as the components have a common proper motion. This movement is given by Auwers in his Fundamental Catalogue as 0*037 in the direction of 241°. If the small star was fixed in space the change in the position of B would be very apparent in the time covered by the measures. The Herschel companion appears to be fixed with reference to A, and is therefore a member of the system. If C had no proper motion, its angle and distance in the interval between 1823 and 1888 would increase respectively 2°7 and 2°7. It is evident from the measures that no such change has taken place. The Harvard photometric magnitude of P Scorpii is 3.0, and of C 5.2. A and B 1879.59 97-3 of85 in HI ..10 1880.06 88 4 0.91 5 P • 9-7 1881.50 92 7 0.96 3» P • 9-3 1887.59 99 2 1.09 2n HI 1887.60 88 5 0.98 3» Sp 1889.41 93 9 0.94 5" P ..10.8 1891.55 95 7 1.00 2» HI ..10 1892.41 95 8 1.03 3» P •• 9-5 1897.57 90 6 1. 00 3» A ..11 1901.3s 94 7 1. 13 3» Doo A and C 1782.29 25 1 14-37 in ¥ 1868.56 25 5 13-71 -)>! A 1879.52 24 4 13-50 4« P 1881.59 25 2 13-41 3» P 1885.01 25 3 13-59 bn En 1888.08 24 8 13.62 4« HI 1901.34 25 1 13-27 4« Doo The principal star was discovered by Slipher at the Lowell Observatory to be a spectroscopic binary (Bui. Lowell Obsy. No. 1). [0 (Xin)...03...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0(...0 A few only of the measures of AC are given. The following refer to this companion: [P...Pa...Mitchell (Cmt)(Sid. Mess. Sept. 1846)...Ma (F. S. I, p. 213). Mu...WJ2...HI... H (VH)...BM (28o)...Oudemans (926)... Se. Ra (XXI, XXII, XXVIH)...HI (Wash. Obs. 1863)... A (1192)... A (I)...Pt... En (2786)... Cin5...Tebbutt(M»i. AW. L, 23)... Wilson (CinlO)... Crufs(Annals Imp. Obsy. Rio de Janeiro IV, Part 1)...Glasenapp (I)...Hu (A.J. 397)... Doolittle (A.J. 564)... Jouffray (Bui. Ast. XXI, 299)...] 7494. Hn 127. 1905-33 [Pub. Washburn Obsy. V. Fixed. 1312 2:09 Doolittle Com  Double Stars o 7 7495. 0 948. Librae 313. (AC — 2 aooj rej.) The duplicity of the principal star of 2 2005 rej. was discovered with the 18 %-inch. Gould puts this in Opkiuchus, 6.8 m. Lalande 29280. A and B 1879.59 1890.82 1902.69 150?5 148.5 145.4 1.64 4" 5" 3" P Lv Doo 1835-6 1892.41 1902.69 A and C (— 2 2005 rej.) 230?5 20* ± in 234.8 29.05 H Lv Doo A and D 1835.6 1892 1902.69 1885.50 35- ± 194.9 52.72 194.3 52-77 In 2» 3" Lv Doo 3" A 3» P In 0 [0 (ITJ)....0>....Lv (^.7.378) (Proc. Havtr/ord Coll. Obsy. 189a). H (Ca/» f«j*j.)...Doolittle (Pub. Flowtr Obsy.fi.)...] 7496. H 581. Only the following since H: 1880.45 50°6 1867 1867.54 303.1 17.50 1881.54 303.1 17.27 [Mm(F. S.I)...Ma(X)...d (n)...^«... 7498. 0 811. Discovered with the 15½-inch at the Washburn Observatory. This star has a proper motion of 0.109 in the direction of 297½ (A. G. Berlin).  326.5 33-20 4n 1864.37 326.9 33-01 m En 1865.21 326.7 33-35 6« 1877.00  1905.47 28s?4 23 '02 P 9. 1...9. 7 7502. 11 Scorpii. 0 39. Discovered with the 6-inch. The measures do not show any relative motion, and the proper motion of the principal star of o?o8o in the direction of 245^8 (Auwers) belongs to the small star as well. There is a 13 m star, 313^8 : 3ofo. o"47 1879.49 1880.48 1882.38 1888.44 1889.44 1899.38 258?4 256.9 254.6 256-4 257-7 258-3 [3 (I)...p (Mon. Not. XXXm, 351)...0» Wilson (CinlO)...LvI...T(3i86)...] 3-33 3-20 3-36 3-33 3-25 3-31 Cin W Lv T P Kn...Pt...CinS. In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In A remarkable change in this pair. The positions of 1905 may belong in the opposite quadrant. The following are all the measures: 1880.25 1887.89 195.2 SP 1898.52 208.6 0.41 3" A 1900.59 207.7 0.18 2" A 1901.48 199.7 0.16 2" A 1903-51 Obi. in 216° 3" A 1904.40 Doubtful 2" A 1905.40 209.3 0.13 2" A 1905.57 210.1 In Doo [0(xm)...p3...sP(iii) ..A(ls*s)(Bul. L. O.N< .n)(W. S (Seep. 1077) 7508. A. G. 202 Double in A.G. Bonn. Measures by Espin (3717).  Herculis. 2 2010. (= $ V. 8 = Sh 219.) A slight change in distance from proper motion. The movement of the large star is 0.088 in 262.8 (Auwers). 1840.88 9.4 3.5 OS 1850.12 10.2 30.09 2.2 02 1858.12 9-9 30-52 4.5 A 1867.12 9-9 30-36 5.5 A 1872.91 10.7 30.18 3.5 OS 1877.01 10.2 30.10 3.5 OS 1885.34 10.5 30.02 Per 1890.40 9-7 29.88 2.2 Gla 1898.47 11.2 29.66 3.5 Doo [Ma (324;... Ma (X, X, XI, XHI)... Ma (Beitragc fur physi- schen Kenntniss des Himmeliscken Korper Weimar, 1841... HI... H (VII) ....Sel....Se....En....En....En(iSi8,i674)....Du....FIm....Ra(XXI,XXrV, XXTX)...Plt...02(IX,X)... A (119a)... A (I,n)...WS2...Sk2...Nobile (Rind, delta R. Accad. Set. Napoli, Nov. 1875)... Do ( Trans. R. I. Acad. XXIX, Part i3)...Do(aio8)...Pt...Goldney (1357)...Je (21.60.)...Sp(II)...Per... Per (2559, 2748)... Engelhardt (II)... Giacomelli (III)... Maw (I)... Glasenapp (I, HI) Doolittle (Pui. Flo-wer Obsy. I) Annals Toulouse Otsy.m...] 7515. OS (App) 142, No change. 1905.46 265?! 104*90 [J (I)...Franz (2649)...£... ] 7516. 2 2011. 1868.75 1889.96 1899.39 [Ma(/-. S.I)...Ma(X). HI (XII)...] (See p. 1077) Without change. 69.5 2f26 65.5 2.54 66.8 2.14 .S...J(n)...Cins.. 4» 3» 2» A HS Lewis Lewis Lewis (Man. Not. LX, 506). 7519. Hd 141. There is no bright star in this place in the Cordoba Zones. Probably an error in Hd in magnitudes or place. Arg. 29. "Duplex" in O. Arg. N. Nothing later but the following: 1903.35 1899.75 113. 7 1.32 3« Hu [MiC. S. D...Ma(X, XV)... 02 (DC, X)...Du... A (1125,1194)...Big... <4 (I. PP- 75. 397)(II)...Seagrave (Sid. Mess. II. 22)...CinV..de Ball (3017) ...En (2662)...HI (I)... Com (VI, X)...Knorre (3518)...Glasenapp (V)...] 7525. 2 aon rej. From H (VIII). By one of H's "Queries" it appears that this star had been regarded as B. A. C. 5379. It is not that, but a star 48s/ and 2' ^I'n. 1879.37 243?8 20T40 3« Cin 9.0... 10. 5 [H (Vm)...H (Mon. Not.XXXU.aq)...p(Mon. Not. XXXIV, 376)...Cin5... ] (See p. 1078) 7526. Ho 550. Change in distance 1902.35 298.5  Sp 1886.67 280.0 0.36 7« En 1887.57 269.5 0.35 5" Sp 1886.61 273.8 0.40 3» Sp 1892.27 277.4 0.40 3» 0 1898.53 278.1 0.42 2K Bowyer 1901. 18 283.0 0.38 4» Bryant 1903-34 274.4 0.44 In Lewis [3 (VI)... 3 (2062, 3142) (Puo.L. O. II)... A (I)... Sp (II, IU)... En (2786)... Greenwich Obsy. ( Mon. Not. LIX, 400; LX, 506; LXI, 486; LXII, 383; LXIV, 801)...] 7529. 2 2014. (= H 1287.) Fixed. 1866.15 9i?9 8'o5 3" 1905.29 90.0 8.29 2« [Ma (F. 5.1)...S«...J(I1)...*•...] 3 Burnham: General Catalogue of Double Stars 7530. 0 40. Discovered with the 6-inch, April 27, 1870. This pair precedes all the P pairs in this catalogue in date of discovery. There does not appear to be any sensible change. Glasenapp measures a third star 9.8 m, gS°9 '98 '37 (1890.46) 2«. 1890.46 354-7 5-71 -•>! Gla 8.5. •9-3 1891.48 355-2 5-07 4" P 8.4. 1903.47 352-3 4.84 2M A 1904.49 352-6 501 3" Doo (0) (I)...0 (Mon. Not. XXXIII. 351)... 0 (3.14X/W. L.O.U)... Cin ... Glasenapp (I)...Doolittle (Pub. Flower Obsy. XL)... ] 4 S3 7531. T Coronae Borealis. 0 1087. Discovered with the 36-inch, r Coronae has a considerable proper motion : Auwers 0.343 in 348.8 It is obvious from an inspection of the measures that the small star is moving at the same rate. This movement of A is almost exactly in the opposite direction, and if the small star was fixed in space, its distance would increase annually by the amount given above, which would make the distance in 1898 more than double that given by the first measures. The following are all the measures 1889.21 1869.21 3-11 3-11 P ...13.8 1891.32 170.7 3-17 3-17 P ...14.2 1892.36 169.9 3-1° 3-1° P ...13.9 1898.37 172.9 3-7 3-7 P ...14.0 1898.64 169.9 3-27 3-7 A ...14.3 (0 (XV)... 0 (2929, 3048, 3114, 3m)(ft'. L. O. U)(Pub. y. O. I)... A (3585)... ] 7532. 13 Scorpii. H 4839. Probably fixed, and common proper motion of o'ioi in 238^4 (Auwers). 1834.69 8i?7 4-62 in H t%. .10 1878.65 79.8 4-44 5-3 Cin 6.5. . 8.4 1890.48 79-7 4°3 2n Gla 7.0. 9-5 1896.43 77-4 4.42 3" Scott 6. . 8 1897.48 77-5 4.14 in See 6. Cin... Cin... Cin... Glasenapp (I)... Scott (Brit. Ast. Ass'nVm, 66) See (349)7. Scorpii. 0 120. (AC = 9 V. 6 = a 509 = Sh 220.) The close pair was discovered with the 6-inch. The duplicity of Herschel's companion was discovered by Mitchel at Cincinnati in 1846, and independently by Jacob the following year. The measures of AB show no sensible motion, and the same may be said of CD. There has been no change in the distance or direction of the two pairs with reference to each other. The principal star, according to Auwers, has a proper motion of 0.042 in the direction of 25.9. The four components are evidently moving together, and undoubtedly form one vast quadruple system. This is in the midst of a complex nebulous area discovered by Barnard (Mon. Not. LIX, 367). A and If 1876.35 360 0.73 8n A 1876.53 361-5 0.67 5» Sp 1878.35 363-7 1.04 2» P 1879.03 360.2 074 3» Cin 1879-58 362.0 0.65 5» Sp 1880.00 366.2 0.66 5» Sp 1881.45 366.7 0.81 6» P 1881.45 366.7 0.81 6» P 1888.36 362.8 0.72 2» Sp 1887.39 364.1 0.80 3» T  2.08 8n Sp 1879.41 45 2 2.07 9» Cin 1881.31 46 6 2.02 4» P 1886.51 49 5 2.10 4» T 1886.61 49 5 2.10 4» T 1886.61 48 3 2.22 3» Lv 1897.48 48 7 2.02 3» Scott 1897.48 43 6 2.05 3» A 1897.60 45 5 1.78 4" Barnard 1898.54 45 0 2.05 2» Maw 1901.42 48 0 1.88 4» Doo AB and C 1821.36 338?2 40.82 in Sh  9 41-32 3« Doo [0 (III)....0 (Mon. Nct.XXXrV,s<>: XXXV, 28)....01....0>....0«....0«....0«....0(3057) (/>«*. Z..0.H.)...Newcomb (Wask. Otsns. 1874)...A (I)...A (3186)... Russell (Sydney O&shi. 1871-81)...Cin«...Cin«...Cin«...Sp (II)...Sp (3133)... HI (I, II)... Pritchett (Pub. Morrison Obsy. I) (A J. 397)... Wilson (Cin 10)... LM... Smith (Mem. X.A.S.L)...T (2866, 2991)... Lv 1... Lv (Sid. Mess. Vm, 77) . . . Hu (A . J. 397) . . . A (346s) (A.S.P. VH, 305) . . . Scott (Mon. Not. LIX, 427) . ■ Doolittle (Pub. Flower Obsy. II) ... ] The following relate to observations of the old components: [H3...Wr...WJ...Se...Se3...Mh.. (HI) . ..Scott (Mon. Not. LXIV, 52). Glasenapp (I) ... Sellors (3154). .. Maw . . Tebbutt (Mon . Not. LXIV, 67) ... ] 7534. 2 2015. (=¥!■ 37.) Probably without c 1782.76 149-8 in W 1802.72 155.0 in W 1829.99 159.3 2*68 3» 2 1843.61 161.5 3-15 2n Ma 1857.62 158.6 2.67 3« Se 1866.59 161 .0 2.71 3» A 1879.56 162.9 2-74 2n OZ 1881.50 160.5 2.95 In Bi(? 1897.94 161. 1 2.69 2n Lewis 1901.05 158.9 3-24 3» Espin 1905.6a 161. 3 2.69 2K P 706 Notes to the Catalogue 16h There is a faint companion more distant, noted with the 36-inch, but erroneously given in Pub. L.O.W and Pub. Y. O. I as belonging to p 355 which is 56s/ 2 20 1 5. 1892.27 97?3 12*8 i« p 1898.53 98.6 12.68 2« Gr. Obsy. 1905.60 98.7 12.50 2« p [Ma(f. S.I).. .Ma (X, XI).. .02 (X). .. A (II). .. Se .. . Big ... Greenwich Obsy. (Mom. Not. LIX, 400; LX, 5o6)(Gr. Oisns. 1897) . .. Glasenapp (V) .. . Espin (Mon. Not. LXU, 539) ...06...] 5" is' 7535. OS (App) 143. The only later position is: 1883.56 84?3 46*52 5« Franz [A (I)... Franz (3649)...] 5 S° 7537. H 1288. Not found by Glasenapp in 1890. 1901.94 i2i?5 19*33 2« P 9.7.. .11.0 [Glasenapp (I).. .3'...] • U 7539. H 1289. "Neat." Probably no motion. 1830+ 237.9 10.39 10.7...11 1880.52 238.9 11.39 1. Big 10.7...11 [H(V)...Big...] 7540. 2 2016. ( = J II. 86.) Perhaps a little change in angle and distance. 1866.06 147.7 7.30 2. p [Ma (f. S. I)...Ma (XI)... Se... A (II).../I. G. Leipzig, p. 209...00... ] 37 7542. 2 2017. Probably a little change from motion. 1863.35 252.2 25.76  (3194)...J (II)...Flm...Je (2369)...P5... ] Glasenapp (V)... Annate Toulouse Obsy. HI...Do (3931)...P5... ] Big. 7543. 02 307 rej. Magnitudes from J. No evidence of change. The distance in Ma (XI) is obviously an error. 1867.90 1898.52 [Ma (XI, XIII)... J (II). 202?8 201.9 Hu (Pub.L. O.V) 17-43 17.70 4» 4» A Hu 7544. 02 305. Without change. Ma measures a distant star, 264^0 : 27*82 (1847.35) which Hu could not see with the 12-inch. The 40-inch shows nothing in that place, but there is a small star, 85^8 : 62*68 (1905.54). 1869.51 262^2 5*42 $n A 1898.34 263.9 5.41 3« Hu [Ma (XI Xm... OS (IX)... A (I)... Per...Per (2685)... Ho (2978)... Ha (.Put. L. O.V)...Doolittle (Pub. Flower Obsy.U)...08...] 7545. 2 2018 rej. Measures from /S5. No other observations. (See p. 1078) 7546. 02 306. No sensible change since the first measures. The following are all the observations: 7 19 1843-33 35-9 0.3± 3« Ma 1846.56 55-9 0.37 4» 02 1846.64 24.4 0.3± 3" Ma 1852.61 31-7 0.2± in Ma 1865.47 50± Obi. A 1884.39 43-0 0.38 3» Per 1886.18 45-7 0.3± IM Ho 1886.54 37-o 0.34 3« HI 1887.64 36.1 0.4± 2« HS 1898.31 40.7 0.36 3« Hu [Ma (XI, Xm)...0S(IX)... A (I, p. M9)...Per. (2978)... Hu (Pub.L. O. V)...H5(XII)...] , Per,(268S)...Hl(II)...Ho 7547. Ho 551. 1902.36 [Ho (3557)...] Probably fixed. 78?3 6*54 7 vi 7» Doo 7549. 2 2025. No material change. The measure n Se3 (p. 42) belongs to some other pair. 1868.77 167^2 2*61 5« A 1905.34 162.3 2.42 \n p [Ma(f. S. I)...Ma(XI)...4(II)...Cin5.../36...] 7550. 2 2019 rej. Measures from Washington Observations 1862. A recent examination shows that these measures are erroneously credited to S 2019 rej., unless there has been a decided change in angle and distance. I9OO.45 7 4» 707 16* Burnham: General Ca 1829-48 315-5 3 '20 3« z I845-4* 3196 3-43 2» Da 1865.43 325-0 3-55 3" J 1872.98 330-3 3-64 2« 0Z 1876.45 328.9 3-8i 3" HI 1882.45 329.6 3-92 3" HI 1887.48 331-3 3-91 4" HI 1888.86 330-3 3-79 3» HZ 1895-59 332-4 3-97 2» Collins 1902-43 333-5 3-82 2« Bowyer 1905-23 334-5 3-85 2» § 180" 270 tl 1 ' ' i ■ ■ ' ' 7m48' SCALE 49 Serpentis. X 2021 [M«(« 5. I)... Ma (304, 324)... Ma (K,X, XI, Xm, XV) . .. H 1 .. . Mh . .. Dal ...D««...Wr...Pl... F1...S* (975)... Se... Se2... Se3... Se (Com/. Rend. XLI, 271) . . . Ba (H, m, IV) . . . Hd. . . Ra (XXII, XXVII, XXVIII, XXX, XXXI, xxxii, xxxiv, xxxv, xxxvni) . . . os (K, X) . . . En (1674, 2677) . . . ws . .. WS2...Sk... J (103a, 1573)... A (Mem. Accad. Set.)... J (I, II). .. Bru . .. Ferr. ..D11...D0 (^igS)(Trans. R. /. Acad.XXlX, Part 13)... PI... Flm... Sp (2133).. .Sp (II). ..Per.. .Per (2529, 2685) . ..Pt. ..Je (2369). ..de Ball (2753) . . .T (2-898) . . . Perry (Eng. Meeli. XXXVIII, 192) . . . Giacomelli (HI) . . . Jones (A.J. 3i2)...Hayn (3051).. HI (ll'ask. Obsns.i&Si, 1884)... HI (I, II)... HI (A.J. 301).... Scc(Beob. Berlin No. 6, 1892).... Glasenapp (I, HI) . . .. Maw (I, H)... Big.. .Big (Bui. A si. XII, 299).. .Collins (A. 7.378)... Com (X)... Knorre (3300) . . .Searlc (A. J. 299).. . Hu (A.J. 397). .. Pritchett (A. J. 397). .. Lehman (A. S. P. IX, 141).... Greenwich Obsy. (Mok. Not. LIX,427; LXII, 383; LXIII, 403; LXIV, 801)....4. G. Leipzig, p. 209....Annah Toulouse Obsy. III.... HS(Xn)....Thiele (3837).... Boeger (A.J. 522)....Sk*.... Biesbroeck.../36...) 7552. 2 2022. The later observers make the angle larger, show very little motion. 1844.36 13>?2 2^89 2« Ma 1858.09 136.5 2.40 2« Se 1865.90 '34-1 2.67 3» A 1879-53 136.7 2.72 2H HI 1884.48 135-9 2 '79 3» HI 1885.41 135-1 2.68 2» Per 1898.22 134-5 2.89 4" Do [M»(^. S. I)... Ma (XI)... OS (IX, Se... J (II)... Pt...01... Per...Per (2748)...En(a74»)...Sp(U)...Hl(J*'aM. Obsns. 1884)... HI (I, II)...Flm... Hu (A. 7.397)... Pritchett (A. J. 397)... Lewis (Afon. Not. LX.sc?)... Do- liltle (Put. Fltnoer Obsy. I)... H2 (XII)... Do (393O... Biesbroeck... ] 7553. 2 2024 rej. Herculis 33. L 29627. This is iden- 7m 49* tical with Ijl IV. 115 (see No. 7503). tions are: 1900.49 44?3 23^6 2« 1905-13 43-7 23.35 2» [Espin (3717)...?...] The only later observations are: Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin |3 6.7...10.4 [See p. 1078) 7554. 2 2023. Perhaps a little change in Espin The angle. 8 36 1842.85 231.8 1.17 2 Se 1866.36 231.5 1.76 3" A 1878.54 230.3 1.93 2« Sp 1879.42 228.4 1.59 4" Cin 1895.62 228.8 1.67 2« Collins 1903.42 227.5 1.70 3" Do 1905-53 226.7 1.65 3" Do 1905-53 226.7 1.65 3" Do [Ma(F. 5.I)...Ma(X, XI, Xm)...Se...Se...FIm...O. Slone(iaoi)...Cin5... Cin... A (H)... Sp (II)... Big (Bui. A st. XH, 299)... Pt... Collins (A.J. 378) ... Pritchett (A.J. 397). Glasenapp (V)... Doolittle (Put. Flower Obsy. I)... Annals Toulouse Obsy. HI. HS (XII)... Do (3931)... J 7555. 2 2030. Fixed. 1866.59 238?7 5-59 3" A 1879.48 238.1 5.92 i« P [Ma (F. AM)...Ma (XI). ..A (11).. .Cint ...03.. .P«...] 8 38 7556. 2 2029. Without change, 1866.73 186°o 6^21 1897.46 187.2 6.46 [Ma(^. 5.I)...Ma(XI)...Se...Se2...J (H)...Glasenapp (V)... ] 8 58 4" 2» A Gla 7558. 2 2027. 1867.16 1880.02 1897.56 Without change. 74-1 189 76.6 1.93 75.6 1.95 9 19 3» 3" in A Sp Brown [Mi(F. S. I)...Ma(XI)...OS (IX)... Se (2748).... Sp (H) Glasenapp (I, II). Obsy. 111...) A (1209)... A (I,n)...Per...Per...Per...Brown (3645) A finals Toulouse 7559. See 270. Discovered by Cogshall at the Lowell Observatory. 1899.43 139?3 9-'oo [See (A. J. 431).. Cogshall (A.J. 505)...] Cogshall 708 Notes to the Catalogue 16h 9ra395 7560. Ho 401. Nothing later but the following: 1902.37 2g8?3 4. '62 3« Doo [Ho (3*34)...] 10 5 7561. 2 2026. A binary of long period. The orbit will necessarily remain uncertain until the companion has passed into the first quadrant. 