EPIC 204278916
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 16h 02m 07.576s |
| Declination | −22° 57′ 46.89″ |
| Characteristics | |
| Evolutionary stage | Pre-main-sequence |
| Spectral type | M1 |
| Apparent magnitude (R) | 13.7 |
| J−H color index | 0.712 |
| J−K color index | 1.033 |
| Astrometry | |
| Proper motion (μ) | RA: -12.267±0.123 mas/yr Dec.: -24.955±0.069 mas/yr |
| Parallax (π) | 7.1285±0.0633 mas |
| Distance | 458 ± 4 ly (140 ± 1 pc) |
| Details | |
| Mass | 0.5 M☉ |
| Radius | 0.97 R☉ |
| Luminosity (bolometric) | 0.15 L☉ |
| Temperature | 3,673 K |
| Age | ≈5 Myr |
| Other designations | |
| 2MASS J16020757-2257467, UCAC2 22721863, USNO-B1.0 0670-00406583, Gaia DR2 6243130106031671168 | |
| Database references | |
| SIMBAD | data |
EPIC 204278916 is a pre-main-sequence star, about five million years old with a spectral type of M1, implying a red dwarf. It is part of the Upper Scorpius sub-group of the Scorpius–Centaurus association, and is in the constellation Scorpius. The star is approximately the size of the Sun at 0.97 R☉, but is only half its mass (0.50 M☉) and a fraction of its luminosity (0.15 L☉).
This stellar object was first characterized by the 2nd USNO CCD Astrograph Catalog and the Two Micron All-Sky Survey, and was further studied during the Kepler space telescope's extended K2 mission Campaign 2 between 23 August and 13 November 2014.