Astronomy:77 Piscium
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Short description: Star system in the constellation Pisces
| Observation data {{#ifeq:J2000.0|J2000.0 (ICRS)|Epoch J2000.0 Equinox J2000.0 (ICRS)| Epoch J2000.0 [[Astronomy:Equinox (celestial coordinates)|Equinox J2000.0}} | |
|---|---|
| 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[3] mas |
| 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[7] mas |
| 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 |
| 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 | |
| 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
- ↑ 1.0 1.1 1.2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 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. doi:10.1086/323920. Bibcode: 2001AJ....122.3466M.
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 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. doi:10.1051/0004-6361:20011822. Bibcode: 2002A&A...384..180F.
- ↑ "77 Psc A". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=77+Psc+A.
- ↑ 7.00 7.01 7.02 7.03 7.04 7.05 7.06 7.07 7.08 7.09 7.10 7.11 7.12 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ "77 Psc B". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=77+Psc+B.
- ↑ 9.0 9.1 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. doi:10.3847/1538-4365/aaa1a5. ISSN 0067-0049. Bibcode: 2018ApJS..235....6T.
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