HD 129357
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes[1] |
| Right ascension | 14h 41m 22.401s[2] |
| Declination | +29° 03′ 31.70″[2] |
| Apparent magnitude (V) | 7.823[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | G2V[1] |
| U−B color index | +0.115[4] |
| B−V color index | +0.635[4] |
| Astrometry | |
| Radial velocity (Rv) | −33.2[3] km/s |
| Proper motion (μ) | RA: +12.418[2] mas/yr Dec.: −159.824[2] mas/yr |
| Parallax (π) | 21.0587±0.0264 mas[2] |
| Distance | 154.9 ± 0.2 ly (47.49 ± 0.06 pc) |
| Absolute magnitude (MV) | +4.49[1] |
| Details | |
| Mass | 1.00±0.06[5] M☉ |
| Radius | 1.3[2] R☉ |
| Luminosity | 1.5[2] L☉ |
| Surface gravity (log g) | 4.16±0.13[5] cgs |
| Temperature | 5,749±47[5] K |
| Metallicity [Fe/H] | −0.02±0.04[5] dex |
| Rotational velocity (v sin i) | 2[6] km/s |
| Age | 8.1[3] Gyr |
| Other designations | |
| BD+29 2568, HIP 71813, PPM 103504, SAO 83469[7] | |
| Database references | |
| SIMBAD | data |
HD 129357 is a G-type main-sequence star in the constellation Boötes that is located about 154 light years from the Sun. The measured properties of this star are very similar to those of the Sun, making it a candidate solar twin. However, it has a lower abundance of lithium than the Sun and appears to be over 3 billion years older, so it may instead be a solar analog.[8][6]
It was suggested by astronomer Olin Eggen that HD 129357 is a member of the Wolf 630 moving group of stars that share a common motion through space. The space velocity components of HD 129357 are (U, V, W) = (+21.3, −36.3, −32.0).[5]
References
[edit]- ^ 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 c d e f g h 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.
- ^ a b c Nortdstrom, R.; et al. (2004). "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ~14000 F and G dwarfs". Astronomy and Astrophysics. 418: 989–1019. arXiv:astro-ph/0405198. Bibcode:2004A&A...418..989N. doi:10.1051/0004-6361:20035959. S2CID 11027621.
- ^ a b Mermilliod, J. -C. (1987). "UBV Photoelectric Photometry Catalogue (1986): I. The Original data". Astronomy and Astrophysics Supplement Series. 71: 413. Bibcode:1987A&AS...71..413M.
- ^ a b c d e King, Jeremy R.; Boesgaard, Ann M.; Schuler, Simon C. (November 2005). "Keck HIRES Spectroscopy of Four Candidate Solar Twins". The Astronomical Journal. 130 (5): 2318–2325. arXiv:astro-ph/0508004. Bibcode:2005AJ....130.2318K. doi:10.1086/452640. S2CID 6535115.
- ^ a b Lubin, Dan; Holden, Bradford P.; Stock, Camille; Melis, Carl; Tytler, David (2024). "Hamilton Echelle Spectrograph Observations of Solar Analog Field Stars: Lithium Abundance and Activity". The Astronomical Journal. 168 (6): 240. Bibcode:2024AJ....168..240L. doi:10.3847/1538-3881/ad823d.
- ^ "HD 129357". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2011-01-21.
- ^ King, Jeremy R.; Boesgaard, Ann M.; Schuler, Simon C. (2005). "Keck HIRES Spectroscopy of Four Candidate Solar Twins". The Astronomical Journal. 130 (5): 2318. arXiv:astro-ph/0508004. Bibcode:2005AJ....130.2318K. doi:10.1086/452640.
