HR 8526
HR 8526, also known as HD 212168, is the primary of a triple star located in the southern circumpolar constellation Octans. The star and its companion have apparent magnitudes of 6.12 and 9.36 respectively. The system is located relatively close at a distance of 76 light years based on Gaia DR3 parallax measurements, but is receding with a heliocentric radial velocity of . This is a Sun-like star with a stellar classification of G0 V. It has 105% the mass of the Sun and 117% its girth. It radiates 157% the luminosity of the Sun from its photosphere at an effective temperature of , giving it a whitish-yellow hue. HR 8526 has an iron abundance similar to the Sun's and spins modestly with a projected rotational velocity of . HD 212168 has a similar age to the Sun; the former is 4.7 billion years old while the latter is 4.6 billion years old. The B subsystem is located  away along a position angle of 78°. It has a combined mass 76% that of the Sun and take roughly 11 years to orbit each other. Spectral classifications for this star vary from G0-V to K2V. The G0 class has been used as an argument that the two visible components form a purely optical pair, but this has been dismissed as mis-identification or contamination and that the actual spectral class is early or mid K.

DENIS J222644.3-750342 is a cool M8 red dwarf located 264 arcseconds away from HR 8526. In 2012, J.A. Caballero identified it as a companion to the AB system, making it a quadruple star system. References

G-type main-sequence stars
M-type main-sequence stars
Octans
Octantis, 72
8526
CD-75 01241
212168
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