51 Aquarii
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 24m 06.88433s[1] |
| Declination | –04° 50′ 13.2692″[1] |
| Apparent magnitude (V) | 5.78[2] |
| Characteristics | |
| Spectral type | A0 V[3] |
| U−B color index | –0.11[2] |
| B−V color index | –0.04[2] |
| Astrometry | |
| Radial velocity (Rv) | +6[4] km/s |
| Proper motion (μ) | RA: +26.90[1] mas/yr Dec.: –7.35[1] mas/yr |
| Parallax (π) | 8.04 ± 0.63[1] mas |
| Distance | 410 ± 30 ly (124 ± 10 pc) |
| Details | |
| Rotational velocity (v sin i) | 91[5] km/s |
| Other designations | |
51 Aquarii (abbreviated 51 Aqr) is a star in the equatorial constellation of Aquarius. 51 Aquarii is its Flamsteed designation. It has an apparent visual magnitude is 5.78[2] and is located around 410 light-years (130 parsecs) from Earth.[1] This is an A-type main sequence star with a stellar classification of A0 V.[3] It has a high rate of rotation with a projected rotational velocity of 91 km/s.[5]
References
- 1 2 3 4 5 6 van Leeuwen, F. (November 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. - 1 2 3 4 Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N.
- 1 2 Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
- ↑ Wilson, R. E. (1953), General Catalogue of Stellar Radial Velocities, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W.
- 1 2 Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224.
- ↑ "51 Aqr -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-07-16
External links
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