| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pisces |
| Right ascension | 01h 26m 41.67906s [1] |
| Declination | +19° 14′ 25.5356″ [1] |
| Apparent magnitude (V) | 5.495 [2] |
| Characteristics | |
| Evolutionary stage | horizontal branch |
| Spectral type | K1 III [3] |
| B−V color index | 1.106±0.005 [4] |
| Astrometry | |
| Radial velocity (Rv) | −42.53±0.09 [5] km/s |
| Proper motion (μ) |
RA: 51.382
[1]
mas/
yr Dec.: -58.041 [1] mas/ yr |
| Parallax (π) | 10.6874 ± 0.1404 mas [1] |
| Distance | 305 ± 4
ly (94 ± 1 pc) |
| Absolute magnitude (MV) | 0.84 [4] |
| Details | |
| Mass | 1.34 [6] M☉ |
| Radius | 12.8+0.1 −0.4 [1] R☉ |
| Luminosity | 68.759±1.058 [1] L☉ |
| Surface gravity (log g) | 2.45±0.10 [7] cgs |
| Temperature | 4,665±42 [7] K |
| Metallicity [Fe/H] | −0.03±0.04 [7] dex |
| Age | 4.1 [6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
94 Piscium is a single [9] star in the zodiac constellation Pisces, [8] located 305 light years away from the Sun. [1] It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 5.495. [2] The object is moving closer to the Earth with a heliocentric radial velocity of −43 km/s. [5] It is a possible member of the Wolf 630 moving group. [10]
This is an evolved K-type giant star with a stellar classification of K1 III. [3] It is a red clump giant, which indicates it is on the horizontal branch and is generating energy through helium fusion at its core. [11] The star is 4.1 billion years old with 1.34 [6] times the mass of the Sun and 13 times the Sun's radius. It is radiating 69 [1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,665 K. [7]
References
- ^ a b c d e f g h i 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.
- ^ a b Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H.
- ^ a b McWilliam, Andrew (1990). "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances". The Astrophysical Journal Supplement Series. 74: 1075. Bibcode: 1990ApJS...74.1075M. doi: 10.1086/191527.
- ^ 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, S2CID 119257644.
- ^ a b Famaey, B.; Jorissen, A.; Luri, X; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv: astro-ph/0409579. Bibcode: 2005A&A...430..165F. doi: 10.1051/0004-6361:20041272. S2CID 17804304.
- ^ a b c Martig, Marie; Fouesneau, Morgan; Rix, Hans-Walter; Ness, Melissa; Mészáros, Szabolcs; García-Hernández, D. A.; Pinsonneault, Marc; Serenelli, Aldo; Aguirre, Victor Silva; Zamora, Olga (2016). "Red giant masses and ages derived from carbon and nitrogen abundances". Monthly Notices of the Royal Astronomical Society. 456 (4): 3655. arXiv: 1511.08203. Bibcode: 2016MNRAS.456.3655M. doi: 10.1093/mnras/stv2830. S2CID 54647886.
- ^ a b c d Bubar, Eric J.; King, Jeremy R. (2010). "Spectroscopic Abundances and Membership in the Wolf 630 Moving Group". The Astronomical Journal. 140 (2): 293. arXiv: 1005.1205. Bibcode: 2010AJ....140..293B. doi: 10.1088/0004-6256/140/2/293. S2CID 118455341.
- ^ a b "94 Psc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-25.
- ^ Eggleton, P. P.; Tokovinin, A. A. (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.
- ^ Bubar, Eric J.; King, Jeremy R. (August 2010), "Spectroscopic Abundances and Membership in the Wolf 630 Moving Group", The Astronomical Journal, 140 (2): 293–318, arXiv: 1005.1205, Bibcode: 2010AJ....140..293B, doi: 10.1088/0004-6256/140/2/293, S2CID 118455341.
- ^ Tautvaišienė, G.; et al. (December 2010), "C, N and O abundances in red clump stars of the Milky Way", Monthly Notices of the Royal Astronomical Society, 409 (3): 1213–1219, arXiv: 1007.4064, Bibcode: 2010MNRAS.409.1213T, doi: 10.1111/j.1365-2966.2010.17381.x, S2CID 119182458
