HD 88522

HD 88522 is a double or multiple star. The component stars are two white stars of similar spectral type—A1V and A2V—and luminosity.[2]

HD 88522

Observation data Epoch J2000      Equinox J2000
Constellation	Antlia
Right ascension	10^h 12^m 02.85179^s[1]
Declination	−28° 36′ 21.4485″[1]
Apparent magnitude (V)	6.28 (6.78 + 7.41)[2]
Characteristics
Spectral type	A1 V (A1 V + A2 V)[2]
B−V color index	0.019±0.004[3]
Astrometry
Radial velocity (Rv)	+27.4±0.4[4] km/s
Proper motion (μ)	RA: −38.74[1] mas/yr Dec.: −1.24[1] mas/yr
Parallax (π)	6.55 ± 0.58[1] mas
Distance	500 ± 40 ly (150 ± 10 pc)
Absolute magnitude (MV)	0.86 + 1.49[2]
Orbit[5]
Period (P)	91.89±0.85 yr
Semi-major axis (a)	0.226±0.003″
Eccentricity (e)	0.676±0.012
Inclination (i)	76.0±0.7°
Longitude of the node (Ω)	198.3±0.5°
Periastron epoch (T)	2003.58±0.22
Argument of periastron (ω) (secondary)	59.7±1.1°
Details
HD 88522 A
Mass	2.53[2] M☉
Luminosity	75.8+16.6 −13.6[6] L☉
Temperature	9,638+134 −132[6] K
Rotational velocity (v sin i)	24[6] km/s
HD 88522 B
Mass	2.17[2] M☉
Other designations
CD−27° 7266, HD 88522, HIP 49967, HR 4003, SAO 178526, WDS J10120-2836AB[7]
Database references
SIMBAD	data

References

1. van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
2. Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal, 180 (180): 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C. Values from Method II listed.
3. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
4. de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
5. Tokovinin, Andrei; et al. (August 2015), "Speckle Interferometry at SOAR in 2014", The Astronomical Journal, 150 (2): 17, arXiv:1506.05718, Bibcode:2015AJ....150...50T, doi:10.1088/0004-6256/150/2/50, S2CID 30737411, 50.
6. Zorec, J.; Royer, F. (January 2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
7. "HD 88522". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-05-08.