Back AP Columbae AST AP Columbae Spanish AP Columbae Dutch AP Голубя Russian AP Columbae Swedish 天鸽座AP Chinese
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Columba |
| Right ascension | 06h 04m 52.14866s |
| Declination | −34° 33′ 35.7744″ |
| Apparent magnitude (V) | 12.96±0.01 |
| Characteristics | |
| Spectral type | M5[2] |
| V−R color index | 1.47±0.03[citation needed] |
| R−I color index | 1.89±0.03[citation needed] |
| Variable type | Flare star[3] |
| Astrometry | |
| Radial velocity (Rv) | 23.91±0.49[4] km/s |
| Proper motion (μ) | RA: +25.787[4] mas/yr Dec.: +343.018[4] mas/yr |
| Parallax (π) | 115.3982 ± 0.0298 mas[4] |
| Distance | 28.264 ± 0.007 ly (8.666 ± 0.002 pc) |
| Absolute magnitude (MV) | 13.34[3] |
| Details[5] | |
| Mass | 0.265±0.008 M☉ |
| Radius | 0.291±0.009 R☉ |
| Luminosity (visual, LV) | 0.00641±0.00019 L☉ |
| Habitable zone inner limit | 0.083 AU |
| Habitable zone outer limit | 0.165 AU |
| Temperature | 3,077±102 K |
| Rotation | 11±1[3] km/s |
| Age | 12–50[3] Myr |
| Other designations | |
2MASS J06045215-3433360, GSC 07079-01500, LTT 2449, L 523-55 | |
| Database references | |
| SIMBAD | data |
AP Columbae is a pre-main-sequence star[6] in the constellation of Columba.[7] It is a small red dwarf with about one-quarter of the radius and mass of the Sun, but less than 1% of its luminosity.[5] This star is located at around 28 ly (8.7 pc) from Earth based on measurements by the Gaia spacecraft,[4] It is closest young star to the Earth, estimated to be 12 and 50 million years old.[6][7][8][9] The Solar System for comparison is 4.5 billion years old.
- ^ Clements, Tiffany D.; Henry, Todd J.; Hosey, Altonio D.; Jao, Wei-Chun; Silverstein, Michele L.; Winters, Jennifer G.; Dieterich, Sergio B.; Riedel, Adric R. (August 2017). "The Solar Neighborhood. XLI. A Study of the Wide Main Sequence for M Dwarfs— Long-term Photometric Variability". The Astronomical Journal. 154 (3): 124. Bibcode:2017AJ....154..124C. doi:10.3847/1538-3881/aa8464. S2CID 54064555.
- ^ "AP Col". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ a b c d Cite error: The named reference
Riedel2011was invoked but never defined (see the help page). - ^ 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.
- ^ a b Hardegree-Ullman, Kevin K.; Apai, Dániel; Bergsten, Galen J.; Pascucci, Ilaria; López-Morales, Mercedes (2023-06-01). "Bioverse: A Comprehensive Assessment of the Capabilities of Extremely Large Telescopes to Probe Earth-like O2 Levels in Nearby Transiting Habitable-zone Exoplanets". The Astronomical Journal. 165 (6): 267. arXiv:2304.12490. Bibcode:2023AJ....165..267H. doi:10.3847/1538-3881/acd1ec. ISSN 0004-6256. AP Columbae's database entry at VizieR.
- ^ a b "Found: A young star in Earth's backyard". The Times of India. 2011-08-31. Archived from the original on 2011-11-07. Retrieved 2011-09-05.
- ^ a b "A new(ish) star is born AP Columbae" (PDF). PhysOrg. Retrieved 2011-09-05.
- ^ "AP Columbae". Zee News. Archived from the original on 2012-09-27. Retrieved 2011-09-05.
- ^ "Skygazers find Earth's closest young star". theconversation.edu.au. 29 August 2011. Retrieved 2011-09-05.