94 Piscium - Wiki slovník

94 Piscium
Observation data; Epoch J2000 Equinox J2000
Constellation	Pisces
Right ascension	01h 26m 41.67906s
Declination	+19° 14′ 25.5356″
Apparent magnitude (V)	5.495
Characteristics
Evolutionary stage	horizontal branch
Spectral type	K1 III
B−V color index	1.106±0.005
Astrometry
Radial velocity (Rv)	−42.53±0.09 km/s
Proper motion (μ)	RA: 51.382 mas/yr ; Dec.: -58.041 mas/yr
Parallax (π)	10.6874 ± 0.1404 mas
Distance	305 ± 4 ly ; (94 ± 1 pc)
Absolute magnitude (MV)	0.84
Details
Mass	1.34 M☉
Radius	12.8+0.1; −0.4 R☉
Luminosity	68.759±1.058 L☉
Surface gravity (log g)	2.45±0.10 cgs
Temperature	4,665±42 K
Metallicity	−0.03±0.04 dex
Age	4.1 Gyr
Other designations
	BD+18° 189, FK5 1039, HD 8763, HIP 6732, HR 414, SAO 92444
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

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[GaiaDR2-1] ^ ^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.

[TYC2-2] 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.

[McWilliam-3] 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.

[Anderson2012-4] 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.

[Famaey2005-5] 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.

[Martig-6] 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.

[Bubar-7] 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.

[Simbad-8] "94 Psc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-25.

[Eggleton2008-9] 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.

[Bubar2010-10] 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.

[Tautvaišienė2010-11] 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

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Observation data Epoch J2000 Equinox J2000
Constellation	Pisces
Right ascension	01^h 26^m 41.67906^s^[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 (R_v)	−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 (M_V)	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	−0.03±0.04^[7] dex
Age	4.1^[6] Gyr

Other designations
BD+18° 189, FK5 1039, HD 8763, HIP 6732, HR 414, SAO 92444^[8]
Database references
SIMBAD	data