| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Columba |
| Right ascension | 06h 04m 32.16s |
| Declination | −34° 33′ 36.0″ |
| Apparent magnitude (V) | 12.96 ± 0.01 |
| Characteristics | |
| Spectral type | M4.5Ve |
| V−R color index | 1.47 ± 0.03 |
| R−I color index | 1.89 ± 0.03 |
| Variable type | UV Ceti flare star[2] |
| Astrometry | |
| Radial velocity (Rv) | 25.7867 km/s |
| Proper motion (μ) | RA: 25.787[3] mas/yr Dec.: 343.018[3] mas/yr |
| Parallax (π) | 115.3982 ± 0.0298 mas[3] |
| Distance | 28.264 ± 0.007 ly (8.666 ± 0.002 pc) |
| Absolute magnitude (MV) | 13.34[2] |
| Details | |
| Mass | ~0.25[2] M☉ |
| Luminosity (visual, LV) | 4 × 10−4[2] L☉ |
| Temperature | 3250[2] K |
| Rotation | 11 ± 1 km/s[2] |
| Age | 12–50 Myr[2] years |
| Other designations | |
2MASS J06045215-3433360, GSC 07079-01500, LTT 2449, L 523-55 | |
| Database references | |
| SIMBAD | data |
AP Columbae, also known as AP Col, is a pre-main-sequence star[4] in the constellation of Columba,[5] which has been studied for the last 15 years, but was recently discovered to be very young and close to Earth.[2][6] It has been recognized as the closest young star to the Earth.[4][5][7][8]
- ^ Cite error: The named reference
Clementswas invoked but never defined (see the help page). - ^ a b c d e f g h Riedel; Murphy; Henry; Carl Melis; Wei-Chun Jao; Subasavage (2011). "The Solar Neighborhood. XXVI. AP Col: The Closest (8.4 pc) Pre-Main-Sequence Star". The Astronomical Journal. 142 (4): 104. arXiv:1108.5318. Bibcode:2011AJ....142..104R. doi:10.1088/0004-6256/142/4/104. S2CID 118546907.
- ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source 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.
- ^ "Baby star found close to Earth". Australian Geographic. Archived from the original on 2011-09-26. 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.