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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 15 km/s.

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 5,935 K, 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 3.6 km/s. 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 14″ 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

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v t e Constellation of Octans
List of stars in Octans Octans in Chinese astronomy
Stars	Bayer α β γ γ γ δ ε ζ η θ ι κ λ μ μ ν ξ ο π π ρ σ (Polaris Australis) τ υ φ χ ψ ω Variable R BQ CK CW FT HR 47 512 525 4595 6837 6912 7698 7785 7812 8234 8380 8432 8526 8577 8786 8935 8957 8995 HD 142022 166066 212301 Other Gliese 877 LHS 475 TOI-4342 W2150AB
Exoplanets 2MASS J2126–8140 HD 142022 Ab HD 212301 b LHS 475 b
Galaxies	NGC 2573 7095 7098 Other PGC 10922
Category

• G-type main-sequence stars
• M-type main-sequence stars
• Octans
• Gould objects
• Bright Star Catalogue objects
• Durchmusterung objects
• Henry Draper Catalogue objects
• Hipparcos objects