Location of 12 Trianguli (circled) | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Triangulum |
| Right ascension | 02 28 09.980 |
| Declination | +29° 40′ 09.59″ |
| Apparent magnitude (V) | 5.37 |
| Characteristics | |
| Spectral type | F0 III |
| B−V color index | +0.29 |
| Astrometry | |
| Radial velocity (Rv) | −24.8±2.8 km/s |
| Proper motion (μ) | RA: −15.632 mas/yr Dec.: −86.097 mas/yr |
| Parallax (π) | 20.4105 ± 0.0942 mas |
| Distance | 159.8 ± 0.7 ly (49.0 ± 0.2 pc) |
| Details | |
| Mass | 1.6 M☉ |
| Luminosity | 14 L☉ |
| Surface gravity (log g) | 3.79 cgs |
| Temperature | 7,199 K |
| Metallicity | 0.27 dex |
| Rotational velocity (v sin i) | 85 km/s |
| Age | 2.19 Gyr |
| Other designations | |
| 12 Trianguli, AG+29°296, BD+29°417, GC 2956, HD 15257, HIP 11486, HR 717, SAO 75382 | |
| Database references | |
| SIMBAD | data |
12 Trianguli is a solitary star located in the northern constellation Triangulum, with an apparent magnitude of 5.37, making it faintly visible to the naked eye under ideal conditions. The star is situated 160 light years away but is approaching with a heliocentric radial velocity of −24.8 km/s. It is calculated to be about 2.19 Gyr old with a stellar classification of F0 III, making it an F-type giant. It has 1.6 times the mass of the Sun and shines at 14 times the luminosity of the Sun from its photosphere at an effective temperature of 7,199 K.
Together with ι Trianguli and 10 Trianguli, it forms part of the obsolete Triangulum Minus.
References
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ Reiners, Ansgar; Zechmeister, Mathias (2020). "Radial velocity photon limits for the dwarf stars of spectral classes F--M". The Astrophysical Journal Supplement Series. 247 (1): 11. arXiv:1912.04120. Bibcode:2020ApJS..247...11R. doi:10.3847/1538-4365/ab609f.
- ^ Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric (March 2019). "Stellar and substellar companions of nearby stars from Gaia DR2 - Binarity from proper motion anomaly". Astronomy and Astrophysics. 623: 623. arXiv:1811.08902. Bibcode:2019A&A...623A..72K. doi:10.1051/0004-6361/201834371.
- ^ Cruzalèbes, P.; et al. (2019). "A catalogue of stellar diameters and fluxes for mid-infrared interferometry". Monthly Notices of the Royal Astronomical Society. 490 (3): 3158–3176. arXiv:1910.00542. Bibcode:2019MNRAS.490.3158C. doi:10.1093/mnras/stz2803.
- ^ Netopil, Martin (2017). "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system". Monthly Notices of the Royal Astronomical Society. 469 (3): 3042–3055. arXiv:1705.00883. Bibcode:2017MNRAS.469.3042N. doi:10.1093/mnras/stx1077.
- ^ Luck, R. Earle (2015). "Abundances in the Local Region I: G and K Giants". The Astronomical Journal. 150 (3): 88. arXiv:1507.01466. Bibcode:2015AJ....150...88L. doi:10.1088/0004-6256/150/3/88.
- ^ Brandt, Timothy D. (2021). "The Hipparcos-Gaia Catalog of Accelerations: Gaia EDR3 Edition". The Astrophysical Journal Supplement Series. 254 (2): 42. arXiv:2105.11662. Bibcode:2021ApJS..254...42B. doi:10.3847/1538-4365/abf93c.
- van Belle, G.T. (2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review. 20 (1): 51. arXiv:1204.2572. Bibcode:2012A&ARv..20...51V. doi:10.1007/s00159-012-0051-2.
- de Bruijne, J.H.J.; Eilers, A.-C. (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.
- Eggleton, P. P.; Tokovinin, A. A. (September 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
| Constellation of Triangulum | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stars |
| ||||||||||||
| |||||||||||||
| |||||||||||||
| Galaxies |
| ||||||||||||
 Category | |||||||||||||