64 Andromedae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda[1] |
| Right ascension | 02h 24m 24.91599s[2] |
| Declination | +50° 00′ 23.5560″[2] |
| Apparent magnitude (V) | 5.19[3] |
| Characteristics | |
| Evolutionary stage | red giant branch[2] |
| Spectral type | G8III[4] |
| U−B color index | +0.753[5] |
| B−V color index | +0.973[5] |
| Astrometry | |
| Radial velocity (Rv) | –13.63[2] km/s |
| Proper motion (μ) | RA: +24.618±0.089[2] mas/yr Dec.: −36.335±0.117[2] mas/yr |
| Parallax (π) | 8.0682±0.0972 mas[2] |
| Distance | 404 ± 5 ly (124 ± 1 pc) |
| Absolute magnitude (MV) | −0.25[1] |
| Details | |
| Mass | 3.12±0.19[6] M☉ |
| Radius | 15.90±0.56[6] R☉ |
| Luminosity | 135.6±8.8[6] L☉ |
| Surface gravity (log g) | 2.55±0.05[6] cgs |
| Temperature | 4,944±33[6] K |
| Metallicity [Fe/H] | −0.03±0.10[6] dex |
| Rotational velocity (v sin i) | 0.69[7] km/s |
| Age | 350±60[6] Myr |
| Other designations | |
| 64 And, BD+49°649, HD 14770, HIP 11220, HR 694, SAO 38005, PPM 27578[8] | |
| Database references | |
| SIMBAD | data |
64 Andromedae, abbreviated 64 And, is a single[9] star in the northern constellation of Andromeda. With a spectral type G8III, it is a deep-yellow coloured G-type giant approximately 404 light years from Earth with an apparent magnitude of 5.19.[2] The star is moving closer to the Earth with a heliocentric radial velocity of –13.6 km/s.[2]
This star is estimated to be 350 million years old[6] with a negligible rotation rate, showing a projected rotational velocity of 0.69 km/s.[7] It has a little more than 3 times the mass of the Sun and has expanded to 16 times the Sun's radius.[6] 64 And is radiating 136 times the luminosity of the Sunfrom its enlarged photosphere at an effective temperature of 4,944 K[6]
Position and chosen constellation
As to the faint triangle and context in which the star figures see 63 Andromedae.
References
- ^ a b 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. XHIP record for this object at VizieR.
- ^ a b c d e f g h i Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ Ducati, J. R. (2002). "VizieR Online Data Catalog: Stellar Photometry in Johnson's 11-color system (Ducati, 2002)". Vizier Online Data Catalog. Bibcode:2002yCat.2237....0D.
- ^ Roman, Nancy G. (1952). "The Spectra of the Bright Stars of Types F5-K5". The Astrophysical Journal. 116: 122. Bibcode:1952ApJ...116..122R. doi:10.1086/145598.
- ^ a b "Homogeneous Means in the UBV System (Mermilliod 1991)". Strasbourg astronomical Data Center. Retrieved 2026-02-18.
- ^ a b c d e f g h i j Reffert, S.; Bergmann, C.; Quirrenbach, A.; Trifonov, T.; Künstler, A. (2016), "Precise radial velocities of giant stars. VII. Occurrence rate of giant extrasolar planets as a function of mass and metallicity", Astronomy & Astrophysics, 574: 13, arXiv:1608.00963, Bibcode:2015A&A...574A.116R, doi:10.1051/0004-6361/201322360, hdl:10722/215277, S2CID 59334290, A116.
- ^ a b Hekker, S.; Meléndez, J. (December 2007), "Precise radial velocities of giant stars. III. Spectroscopic stellar parameters", Astronomy & Astrophysics, 475 (3): 1003–1009, arXiv:0709.1145, Bibcode:2007A&A...475.1003H, doi:10.1051/0004-6361:20078233, S2CID 10436552.
- ^ "64 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 5, 2018.
- ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.