HD 88522
(Redirected from HR 4003)
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| 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 mas[1] |
| 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
[edit]- ^ a b c d e 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.
- ^ a b c d e f 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ a b c 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.
- ^ "HD 88522". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-05-08.
