| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22 39 16.03872 |
| Declination | −10° 01′ 40.1750″ |
| Apparent magnitude (V) | 6.93 |
| Characteristics | |
| Spectral type | G2/3 IV/V |
| B−V color index | 0.619±0.009 |
| Astrometry | |
| Radial velocity (Rv) | +10.7±0.5 km/s |
| Proper motion (μ) | RA: −60.940 mas/yr Dec.: +3.803 mas/yr |
| Parallax (π) | 10.4508 ± 0.1554 mas |
| Distance | 312 ± 5 ly (96 ± 1 pc) |
| Absolute magnitude (MV) | 2.75 |
| Details | |
| Mass | 1.45±0.06 M☉ |
| Radius | 2.78±0.07 R☉ |
| Luminosity | 13.133±0.225 L☉ |
| Surface gravity (log g) | 3.708±0.013 cgs |
| Temperature | 5,926±97 K |
| Metallicity | −0.02±0.11 dex |
| Rotational velocity (v sin i) | 8.75 km/s |
| Age | 2.63±0.26 Gyr |
| Other designations | |
| BD−10° 5963, GC 31614, HD 214572, HIP 111843, SAO 165217 | |
| Database references | |
| SIMBAD | data |
64 Aquarii is a star located 312 light years away from the Sun in the zodiac constellation of Aquarius. 64 Aquarii is its Flamsteed designation. With an apparent visual magnitude of 6.93, it is too faint to be readily visible to the naked eye. The star is moving further from the Earth with a heliocentric radial velocity of +11 km/s.
The stellar classification for this star is G2/3 IV/V, which indicates the spectrum displays mixed traits of a G-type main-sequence star and a more evolved subgiant star. It is 2.6 billion years old and is spinning with a projected rotational velocity of 8.75 km/s. The star has 1.45 times the mass of the Sun and 2.8 times the Sun's radius. It is radiating 13 times the luminosity of the Sun from its photosphere at an effective temperature of 5,926 K.
References
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ 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.
- ^ Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars", Michigan Spectral Survey, 5, Bibcode:1999MSS...C05....0H.
- ^ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065, S2CID 119231169.
- ^ Lund, Mikkel N.; et al. (December 2016), "Asteroseismic Properties of Solar-type Stars Observed with the NASA K2 Mission: Results from Campaigns 1-3 and Prospects for Future Observations", Publications of the Astronomical Society of the Pacific, 128 (970): 124204, arXiv:1608.07292, Bibcode:2016PASP..128l4204L, doi:10.1088/1538-3873/128/970/124204, S2CID 119246395.
- "64 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 24, 2018.
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