// Workers AI · dad joke modeIs HD 40235 a star? Does it have a burning issue?
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Lepus[1] |
| Right ascension | 05h 56m 34.4388s[2] |
| Declination | −23° 12′ 55.121″[2] |
| Apparent magnitude (V) | 6.37[1] |
| Characteristics | |
| Spectral type | K0III[1] |
| B−V color index | 1.068±0.002[1] |
| Astrometry | |
| Radial velocity (Rv) | −4.64±0.12[2] km/s |
| Proper motion (μ) | RA: +13.817 mas/yr[2] Dec.: +29.448 mas/yr[2] |
| Parallax (π) | 6.8612±0.0187 mas[2] |
| Distance | 475 ± 1 ly (145.7 ± 0.4 pc) |
| Absolute magnitude (MV) | +0.69[1] |
| Details | |
| Mass | 1.51[3] M☉ |
| Radius | 11.6[4] R☉ |
| Luminosity | 60[4] L☉ |
| Surface gravity (log g) | 2.78±0.03[5] cgs |
| Temperature | 4,853±22[5] K |
| Metallicity [Fe/H] | −0.10±0.01[5] dex |
| Other designations | |
| CD−23°3263, HD 40235, HIP 28118, HR 2090, TYC 6491-1059-1[6] | |
| Database references | |
| SIMBAD | data |
HD 40235 is a star in the constellation Lepus. At an apparent magnitude of 6.37, it is faintly visible to the naked eye in locations far from light pollution. Parallax measurements give a distance of 475 light-years (145.7 parsecs).
The spectrum of this star matches a spectral class of K0III,[1] with the luminosity class III indicating it is a giant that has exhausted the hydrogen at its core. The star has a mass 1.51 times the mass of the Sun[3] and has expanded to 11.6 times the Sun's radius. It now radiates 60 times the Sun's luminosity from its photosphere[4] at an effective temperature of 4,853 K.[5] This temperature give it the orange hue typical of a K-type star.[7]
References
[edit]- 1 2 3 4 5 6 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. XHIP record for this object at VizieR.
- 1 2 3 4 5 6 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.
- 1 2 Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardèvol, J.; Casamiquela, L.; Figueras, F.; Jiménez-Arranz, Ó.; Jordi, C.; Monguió, M.; Romero-Gómez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy and Astrophysics. 658: A91. arXiv:2111.01860. Bibcode:2022A&A...658A..91A. doi:10.1051/0004-6361/202142369.
- 1 2 3 McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433.
- 1 2 3 4 Huson, Dylan; Cowan, Indiana; Sizemore, Logan; Kounkel, Marina; Hutchinson, Brian (2025). "Gaia Net: Toward Robust Spectroscopic Parameters of Stars of all Evolutionary Stages". The Astrophysical Journal. 984 (1): 58. arXiv:2503.02958. Bibcode:2025ApJ...984...58H. doi:10.3847/1538-4357/adc2fa.
- ↑ "HD 40235". SIMBAD. Centre de données astronomiques de Strasbourg.
- ↑ "The Colour of Stars". Australia Telescope, Outreach and Education. Commonwealth Scientific and Industrial Research Organisation. December 21, 2004. Archived from the original on 2013-12-03. Retrieved 2012-01-16.
