OGLE-TR-123
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Carina |
| Right ascension | 11h 06m 51.19s |
| Declination | −61° 11′ 10.1″ |
| Characteristics | |
| Spectral type | F (primary)/M (b) |
| Apparent magnitude (I) | 15.40 (system) |
| Variable type | Eclipsing binary |
| Astrometry | |
| Distance | 5000 ± 1000 ly (1600 ± 400 pc) |
| Orbit | |
| Period (P) | 1.804 days |
| Semi-major axis (a) | 0.031 ± 0.002 AU |
| Eccentricity (e) | 0 |
| Inclination (i) | 86–90°° |
| Details | |
| OGLE-TR-123A | |
| Mass | 1.3 M☉ |
| Radius | 1.55 R☉ |
| Temperature | 6700 ± 300 K |
| OGLE-TR-123b | |
| Mass | 0.085 M☉ |
| Radius | 0.13 R☉ |
| Other designations | |
| V816 Car, 2MASS J11065112-6111103 | |
| Database references | |
| SIMBAD | data |
OGLE-TR-123 is a binary stellar system containing one of the smallest main-sequence stars whose radius has been measured. It was discovered when the Optical Gravitational Lensing Experiment (OGLE) survey observed the smaller star eclipsing the larger primary. The orbital period is approximately 1.80 days.