77 Piscium
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Pisces[1][2] |
| A | |
| Right ascension | 01h 05m 49.23s[3] |
| Declination | +04° 54′ 30.2″[3] |
| Apparent magnitude (V) | 6.39[4] |
| Ba | |
| Right ascension | 01h 05m 51.43s[5] |
| Declination | +04° 54′ 33.9″[5] |
| Apparent magnitude (V) | 7.20±0.01[5] |
| Bb | |
| Right ascension | 01h 05m 51.37s[5] |
| Declination | +04° 54′ 33.5″[5] |
| Apparent magnitude (V) | 8.89±0.02[5] |
| Characteristics | |
| A | |
| Evolutionary stage | main sequence[3] |
| Spectral type | F5V[6] |
| B−V color index | 0.383±0.009[1] |
| B | |
| Evolutionary stage | main sequence[7] |
| Spectral type | F5-7V[8] |
| B−V color index | 0.484±0.008[2] |
| Astrometry | |
| A | |
| Radial velocity (Rv) | −7.59±0.19[3] km/s |
| Proper motion (μ) | RA: 34.533±0.058[3] mas/yr Dec.: −126.163±0.037[3] mas/yr |
| Parallax (π) | 22.5346±0.0487 mas[3] |
| Distance | 144.7 ± 0.3 ly (44.38 ± 0.10 pc) |
| Absolute magnitude (MV) | +3.31[1] |
| B | |
| Radial velocity (Rv) | −7.19±0.14[7] km/s |
| Proper motion (μ) | RA: 24.106±0.030[7] mas/yr Dec.: −117.494±0.021[7] mas/yr |
| Parallax (π) | 22.6816±0.0276 mas[7] |
| Distance | 143.8 ± 0.2 ly (44.09 ± 0.05 pc) |
| Absolute magnitude (MV) | +4.10[2] |
| Details | |
| A | |
| Mass | 1.381+0.061 −0.062[3] M☉ |
| Radius | 1.63+0.99 −0.10[3] R☉ |
| Luminosity | 4.71+0.99 −0.19[3] L☉ |
| Surface gravity (log g) | 4.00+0.67 −0.45[3] cgs |
| Temperature | 6,635+849 −502[3] K |
| Metallicity [Fe/H] | −0.92+0.79 −0.21[3] dex |
| Rotational velocity (v sin i) | 23.0[9] km/s |
| Age | 2.05+1.10 −0.20[3] Gyr |
| Ba | |
| Mass | 1.158+0.167 −0.168[7] M☉ |
| Radius | 1.23+0.70 −0.42[7] R☉ |
| Luminosity | 2.01+0.63 −0.43[7] L☉ |
| Surface gravity (log g) | 4.20+0.09 −0.05[7] cgs |
| Temperature | 6,203+839 −604[7] K |
| Metallicity [Fe/H] | −0.61+0.40 −0.21[7] dex |
| Rotational velocity (v sin i) | 8.0[9] km/s |
| Age | 2.80+0.11 −0.06[7] Gyr |
| Bb | |
| Mass | 0.62[10] M☉ |
| Other designations | |
| 77 Psc, CCDM J01058+0455, WDS J01058+0455 | |
| A: BD+04°175, HD 6749, HIP 5141, HR 313, SAO 109666, TYC 22-1278-1 | |
| B: BD+04°176, HD 6480, HIP 5144, HR 314, SAO 10966 | |
| Database references | |
| SIMBAD | data |
| A | |
| B | |
77 Piscium is a multiple star system in the constellation of Pisces. The star system is located at a distance of 144 and 143 light years from the Earth based on parallax,[3][7] but is drifting closer with a heliocentric radial velocity of −7.59 and −7.19 km/s.[3][7]
References
[edit]- 1 2 3 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.
- 1 2 3 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.
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 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.
- ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.
- 1 2 3 4 5 6 Fabricius, C.; Høg, E.; Makarov, V. V.; Mason, B. D.; Wycoff, G. L.; Urban, S. E. (2002). "VizieR Online Data Catalog: The Tycho-2 catalogue". Astronomy and Astrophysics. 384: 180. Bibcode:2002A&A...384..180F. doi:10.1051/0004-6361:20011822.
- ↑ "77 Psc A". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 14 June 2026.
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 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.
- ↑ "77 Psc B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 14 June 2026.
- 1 2 Glebocki, R.; Gnacinski, P. (2005). "VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)". VizieR On-line Data Catalog. Bibcode:2005yCat.3244....0G.
- ↑ Tokovinin, Andrei (March 2018). "The Updated Multiple Star Catalog". The Astrophysical Journal Supplement Series. 235 (1): 6. arXiv:1712.04750. Bibcode:2018ApJS..235....6T. doi:10.3847/1538-4365/aaa1a5. ISSN 0067-0049. S2CID 119047709.
External links
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