HD 10939
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Eridanus[1] |
| Right ascension | 01h 46m 06.3s[2] |
| Declination | −53° 31′ 19″[2] |
| Apparent magnitude (V) | 5.03[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | A1V[4] |
| U−B color index | 0.05[5][6] |
| B−V color index | 0.04[5][6] |
| Astrometry | |
| Proper motion (μ) | RA: +126.534 mas/yr[2] Dec.: +59.909 mas/yr[2] |
| Parallax (π) | 16.0575±0.0693 mas[2] |
| Distance | 203.1 ± 0.9 ly (62.3 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.08[1] |
| Details | |
| Mass | 2.3[7] M☉ |
| Radius | 2.27[7] R☉ |
| Luminosity | 32[7] L☉ |
| Surface gravity (log g) | 4.09[7] cgs |
| Temperature | 9,110[7] K |
| Rotation | 0.69 days[8] |
| Rotational velocity (v sin i) | 72.8[8] km/s |
| Age | 346[9] Myr |
| Other designations | |
| CPD−54°377, SAO 232520, HD 10939, HR 520, q2 Eridani[5] | |
| Database references | |
| SIMBAD | data |
HD 10939 is a star[5][6] with an apparent magnitude of 5.03, making it visible to the naked eye. It glows white with a spectral type of A1V, and has a surface temperature of around 7,500 to 10,000 K.
References
[edit]- ^ 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. XHIP record for this object at VizieR.
- ^ a b c d e 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.
- ^ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355. Bibcode:2000A&A...355L..27H.
- ^ Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0. Bibcode:1975mcts.book.....H.
- ^ a b c d "HD 10939". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-06-30.
- ^ a b c "VizieR Detailed Page". Archived from the original on 2016-03-05. Retrieved 2012-07-13.
- ^ a b c d e Stassun, Keivan G.; et al. (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.
- ^ a b Balona, L. A. (2019). "Evidence for spots on hot stars suggests major revision of stellar physics". Monthly Notices of the Royal Astronomical Society. 490 (2): 2112. arXiv:1910.01584. Bibcode:2019MNRAS.490.2112B. doi:10.1093/mnras/stz2808.
- ^ Meshkat, Tiffany; Mawet, Dimitri; Bryan, Marta L.; Hinkley, Sasha; Bowler, Brendan P.; Stapelfeldt, Karl R.; Batygin, Konstantin; Padgett, Deborah; Morales, Farisa Y.; Serabyn, Eugene; Christiaens, Valentin; Brandt, Timothy D.; Wahhaj, Zahed (2017). "A Direct Imaging Survey of Spitzer-detected Debris Disks: Occurrence of Giant Planets in Dusty Systems". The Astronomical Journal. 154 (6): 245. arXiv:1710.04185. Bibcode:2017AJ....154..245M. doi:10.3847/1538-3881/aa8e9a.
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