OGLE-TR-122
| OGLE-TR-122 | |
|---|---|
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|
| Constellation | Carina |
| Right ascension | 11 h 06 m 52.0 s |
| declination | −60 ° 51 ′ 46 ″ |
| Apparent overall brightness in the I-band | 15.6 mag |
| Astrometry | |
| distance | approx. 1000 pc approx. 3000 ly |
| orbit | |
| Period of circulation | 7.3 days |
| eccentricity | 0.2 |
| Individual data | |
| Spectral class | b: M |
| Dimensions | A: 1.0 M ☉ b: 100 masses of Jupiter (0.1 M ☉ ) |
| radius | A: 1.1 R ☉ b: 0.1 R ☉ |
| temperature | A: (5700 ± 300) K |
OGLE-TR-122 is an eclipsing binary star system with an orbital period of about 7.3 days in the constellation Carina . The smaller companion, the red dwarf OGLE-TR-122b , is the smallest main sequence star for which a direct measurement of the radius is available. The mass of OGLE-TR-122b is estimated to be about 0.1 solar masses (around 100 Jupiter masses), its radius 0.1 solar radii.
Individual evidence
- ↑ What is the smallest star? (English)