Phi1 Hydrae
Today we are going to delve into the fascinating world of Phi1 Hydrae, a topic that has captivated the attention of people of all ages and cultures throughout history. Phi1 Hydrae is an inexhaustible source of inspiration and fascination, whether due to its impact on society, its relevance in the scientific field, its influence on popular culture or its transformative power in people's lives. Throughout this article, we will explore the different aspects of Phi1 Hydrae, from its origins to its latest trends, to better understand its importance and impact on the modern world.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Hydra |
| Right ascension | 10h 32m 41.16026s[1] |
| Declination | −16° 57′ 31.4110″[1] |
| Apparent magnitude (V) | 7.61[2] |
| Characteristics | |
| Spectral type | G2 V[3] |
| Astrometry | |
| Radial velocity (Rv) | +15.8±0.3[4] km/s |
| Proper motion (μ) | RA: −20.964[5] mas/yr Dec.: −87.082[5] mas/yr |
| Parallax (π) | 12.2814±0.0688 mas[5] |
| Distance | 266 ± 1 ly (81.4 ± 0.5 pc) |
| Absolute magnitude (MV) | +3.30[6] |
| Details[7] | |
| Mass | 1.34 M☉ |
| Radius | 2.1[5] R☉ |
| Luminosity | 4.4[6] L☉ |
| Surface gravity (log g) | 3.90±0.08 cgs |
| Temperature | 5,992±50 K |
| Metallicity | +0.15±0.05 dex |
| Age | 4.1 Gyr |
| Other designations | |
| φ1 Hya, 43 Hydrae, BD−16°3078, HD 91369, HIP 51614, SAO 156047[8] | |
| Database references | |
| SIMBAD | data |
Phi1 Hydrae, Latinized from φ1 Hydrae, is a yellow-hued star in the constellation Hydra. Its apparent magnitude is 7.61,[2] making it too faint to be seen with the naked eye. Based upon an annual parallax shift of 12.3 mas as seen from Earth,[1] it is located about 266 light-years from the Sun. It forms a triangle with the brighter φ2 Hydrae and φ3 Hydrae, between μ Hydrae and ν Hydrae.
Phi1 Hydrae is an ordinary G-type main-sequence star, having a Sun-like stellar classification of G2 V and a photospheric temperature only slightly higher than the sun.[3] However, the mass is 34%[7] greater than the Sun, and it is radiating 4.4 times the Sun's luminosity.[6] Phi1 Hydrae is moving further from the Sun with a radial velocity of +15.8 km/s.[4]
References
- ^ a b c van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
- ^ a b Høg, E.; et al. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy and Astrophysics, 355: L27, Bibcode:2000A&A...355L..27H.
- ^ a b Houk, N.; Smith-Moore, M. (1988), "Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars", Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume 4, 4, Ann Arbor, MI, USA: Department of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H.
- ^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ a b c d 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 c 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 Bensby, T.; Feltzing, S.; Oey, M. S. (2014), "Exploring the Milky Way stellar disk. A detailed elemental abundance study of 714 F and G dwarf stars in the solar neighbourhood", Astronomy & Astrophysics, 562 (A71): 28, arXiv:1309.2631, Bibcode:2014A&A...562A..71B, doi:10.1051/0004-6361/201322631, S2CID 118786105.
- ^ "43 Hya". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-01-09.
