HD 134335
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes[1] |
| Right ascension | 15h 08m 35.56370s[2] |
| Declination | +25° 06′ 31.0833″[2] |
| Apparent magnitude (V) | 5.9781±0.0007[3] |
| Characteristics | |
| Evolutionary stage | red giant branch[2] |
| Spectral type | K1III[4] |
| B−V color index | 1.24[4] |
| Astrometry | |
| Radial velocity (Rv) | −18.17±0.23[3] km/s |
| Proper motion (μ) | RA: −3.759 mas/yr[2] Dec.: −0.806 mas/yr[2] |
| Parallax (π) | 6.8281±0.0380 mas[2] |
| Distance | 478 ± 3 ly (146.5 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.05[1] |
| Details | |
| Mass | 3.7[2] M☉ |
| Radius | 19[2] R☉ |
| Luminosity | 126.6[5] L☉ |
| Surface gravity (log g) | 2.38[2] cgs |
| Temperature | 4,409[5] K |
| Rotational velocity (v sin i) | 1.1[4] km/s |
| Age | 217[2] Myr |
| Other designations | |
| BD+25°2876, HD 134335, HIP 74096, HR 5640, SAO 83685[6] | |
| Database references | |
| SIMBAD | data |
HD 134335 is a giant star in the northern constellation of Boötes. As a sixth magnitude star,[3] it is dimly visible to the naked eye under favorable viewing conditions. It is located at a distance of approximately 478 light years based on parallax measurements,[2] and is drifting closer with a heliocentric radial velocity of −18 km/s.[3] It may approach as close as 37.3 ly (11.43 pc) in about 7.6 million years.[1]
The stellar classification of HD 134335 is K1III,[4] matching a K-type giant star that has exhausted the supply of hydrogen at its core and expanded. It is radiating 127 times the luminosity of the Sun from its photosphere at an effective temperature of 4,409 K.[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 i j 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 d Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430: 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272, S2CID 17804304.
- ^ a b c d De Medeiros, J. R.; Mayor, M. (1999), "A catalog of rotational and radial velocities for evolved stars", Astronomy and Astrophysics Supplement Series, 139 (3): 433, arXiv:astro-ph/0608248, Bibcode:1999A&AS..139..433D, doi:10.1051/aas:1999401.
- ^ a b c McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
- ^ "HD 134335". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2024-11-12.
