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]
Clements
was invoked but never defined (see the help page).