Astronomy:HD 88522
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Short description: Star in the constellation Antlia
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Antlia |
| Right ascension | 10h 12m 02.85179s[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 | |
| Database references | |
| SIMBAD | data |
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]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal 180 (180): 71–80, doi:10.2298/SAJ1080071C, Bibcode: 2010SerAJ.180...71C. Values from Method II listed.
- ↑ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 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, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D.
- ↑ Tokovinin, Andrei et al. (August 2015), "Speckle Interferometry at SOAR in 2014", The Astronomical Journal 150 (2): 17, doi:10.1088/0004-6256/150/2/50, 50, Bibcode: 2015AJ....150...50T.
- ↑ 6.0 6.1 6.2 Zorec, J.; Royer, F. (January 2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics 537: A120, doi:10.1051/0004-6361/201117691, Bibcode: 2012A&A...537A.120Z.
- ↑ "HD 88522". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+88522.
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