TOI-1338
TOI-1338 is a binary star system located in the constellation Pictor, about 1,320 light-years from Earth. It is orbited by two known circumbinary planets, TOI-1338 b, discovered by the Transiting Exoplanet Survey Satellite (TESS) and BEBOP-1c, discovered by the Binaries Escorted By Orbiting Planets project.
Position of TOI-1338 in Pictor | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pictor |
| Right ascension | 06h 08m 31.968s |
| Declination | −59° 32′ 28.08″ |
| Apparent magnitude (V) | 11.72 |
| Characteristics | |
| Spectral type | F8 / M |
| Variable type | eclipsing |
| Astrometry | |
| Radial velocity (Rv) | 23.56±5.34 km/s |
| Proper motion (μ) | RA: −12.057 mas/yr Dec.: +34.513 mas/yr |
| Parallax (π) | 2.4752 ± 0.0099 mas |
| Distance | 1,318 ± 5 ly (404 ± 2 pc) |
| Orbit | |
| Period (P) | 14.608559+0.00013 −0.00012 d |
| Semi-major axis (a) | 0.1321+0.0024 −0.0025 AU |
| Eccentricity (e) | 0.15603±0.00015 |
| Inclination (i) | 89.696+0.178 −0.114° |
| Semi-amplitude (K1) (primary) | 21.619±0.007 km/s |
| Details | |
| TOI-1338 A | |
| Mass | 1.127+0.068 −0.069 M☉ |
| Radius | 1.331+0.024 −0.026 R☉ |
| Luminosity | 2.1 L☉ |
| Surface gravity (log g) | 4.0 cgs |
| Temperature | 6,160 K |
| Metallicity [Fe/H] | +0.01 dex |
| Rotation | 19±3 d |
| Rotational velocity (v sin i) | 3.6 km/s |
| Age | 4.4 Gyr |
| TOI-1338 B | |
| Mass | 0.3128+0.0113 −0.0118 M☉ |
| Radius | 0.3089+0.0056 −0.0060 R☉ |
| Other designations | |
TYC 8533-950-1, EBLM J0608-59, 2MASS J06083197-5932280, RAVE J060832.0-593228 | |
| Database references | |
| SIMBAD | data |
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