What is 279 Thule?
{{Infobox planet | minorplanet=yes | background=#D6D6D6 | name=279 Thule | pronounced={{IPAc-en|ˈ|θj|uː|l|i}} {{respell|THEW|lee}}<ref>{{cite encyclopedia | encyclopedia=[[Oxford English Dictionary]] second edition |title=Thule |url=http://www.oed.com/view/Entry/201483 |access-date=7 December 2018| date=1989 |publisher=Oxford University Press}}</ref> | discoverer=[[Johann Palisa]] | discovered=25 October 1888 | mpc_name=(279) Thule | alt_names={{mp|1927 EC|}}, {{mp|1954 FF|}}, A920 GA, A923 RA<ref name=jpldata/> | mp_category=[[Asteroid belt]] ([[Thule asteroid|Thule]]) | orbit_ref=<ref name=jpldata>{{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=279;cad=1 |title=279 Thule |work=[[JPL Small-Body Database]] |publisher=[[NASA]]/[[Jet Propulsion Laboratory]] |access-date=11 May 2016}}</ref> | epoch=31 July 2016 ([[Julian day|JD]] 2457600.5) | semimajor={{Convert|4.3492770|AU|Gm|abbr=on}} | perihelion={{Convert|4.2367660|AU|Gm|abbr=on}} | aphelion={{Convert|4.4617880|AU|Gm|abbr=on|lk=on}} | eccentricity=0.025869 | period=9.07 [[Julian year (astronomy)|yr]] (3313.0 [[Julian year (astronomy)|d]]) | inclination=2.323774° | asc_node=72.46791° | arg_peri=42.36797° | mean_anomaly=62.75874[[Degree (angle)|°]] | dimensions={{val|126.59|3.7|ul=km}} {{small|([[IRAS]])}}<ref name=jpldata/> | mass= | density= | rotation={{Convert|23.896|h|d|abbr=on|lk=on}}<ref name=jpldata/> | spectral_type=B−V=0.75<ref name=jpldata/><br />U−B=0.32<ref name=jpldata/><br />[[D-type asteroid|D]] {{small|([[Tholen classification|Tholen]])}}<ref name=jpldata/><br />[[X-type asteroid|X]] {{small|([[SMASS classification|SMASSII]])}}<ref name=jpldata/> | abs_magnitude=8.57<ref name=jpldata/> | albedo={{val|0.0412|0.003}}<ref name=jpldata/> | single_temperature=133 K | mean_motion={{Deg2DMS|0.1086622|sup=ms}} / day | observation_arc=125.34 yr (45780 d) | uncertainty=0 }} '''279 Thule''' is a very big [[Asteroid belt|Main belt]] [[asteroid]]. It is classified as a [[D-type asteroid]] and is probably made of [[Organic