17 Camelopardalis is a single[8] star in the northern circumpolar constellation of Camelopardalis, located roughly 960 light years away from the Sun. It is visible to the naked eye as a faint, red-hued star with an apparent visual magnitude of 5.44. This object is moving closer to the Earth with a heliocentric radial velocity of −20 km/s.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 05h 30m 10.20325s[1] |
| Declination | +63° 04′ 01.9891″[1] |
| Apparent magnitude (V) | 5.44[2] |
| Characteristics | |
| Spectral type | M1IIIa[3] |
| B−V color index | 1.704±0.004[4] |
| Variable type | suspected[2] |
| Astrometry | |
| Radial velocity (Rv) | −20.89±0.23[1] km/s |
| Proper motion (μ) | RA: −5.602[1] mas/yr Dec.: −4.751[1] mas/yr |
| Parallax (π) | 3.0424 ± 0.1380 mas[1] |
| Distance | 1,070 ± 50 ly (330 ± 10 pc) |
| Absolute magnitude (MV) | −1.85[4] |
| Details | |
| Mass | 0.64[5] M☉ |
| Radius | 100[6] R☉ |
| Luminosity | 3,230[5] L☉ |
| Surface gravity (log g) | 0.15[5] cgs |
| Temperature | 3,852[6] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an ageing red giant star, currently on the asymptotic giant branch,[9] with a stellar classification of M1IIIa.[3] It is a suspected small amplitude variable.[2] The star has expanded to 100 times the Sun's radius and is radiating 3,230 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,852 K.
References
edit- ^ a b c d e f 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 Samus, N. N.; Durlevich, O. V.; et al. (2004). "VizieR Online Data Catalog: Combined General Catalogue of Variable Stars (Samus+ 2004)". VizieR On-line Data Catalog: II/250. Originally Published in: 2004yCat.2250....0S. 2250. Bibcode:2004yCat.2250....0S.
- ^ a b Kwok, Sun; Volk, Kevin; Bidelman, William P. (1997). "Classification and Identification of IRAS Sources with Low-Resolution Spectra". The Astrophysical Journal Supplement Series. 112 (2): 557. Bibcode:1997ApJS..112..557K. doi:10.1086/313038.
- ^ 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 c Stassun, Keivan G.; et al. (September 2018). "The TESS Input Catalog and Candidate Target List". The Astronomical Journal. 156 (3): 102. arXiv:1706.00495. Bibcode:2018AJ....156..102S. doi:10.3847/1538-3881/aad050. ISSN 0004-6256.
- ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. eISSN 1538-3881.
- ^ "17 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-16.
- ^ 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.
- ^ Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". Astronomical Journal. 104 (1): 275–313. Bibcode:1992AJ....104..275E. doi:10.1086/116239.