WASP-10
Star in the constellation Pegasus
From Wikipedia, the free encyclopedia
WASP-10 is a star 461 light-years away in the constellation Pegasus. It hosts a transiting planet discovered by the SuperWASP project.[3]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pegasus[1] |
| Right ascension | 23h 15m 58.3006s[2] |
| Declination | +31° 27′ 46.296″[2] |
| Apparent magnitude (V) | 12.7[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | K5V[4] |
| Apparent magnitude (B) | ~12.4[5] |
| Apparent magnitude (R) | ~12.03[5] |
| Apparent magnitude (J) | 10.603 ±0.026[5] |
| Apparent magnitude (H) | 10.117 ±0.029[5] |
| Apparent magnitude (K) | 9.983 ±0.018[5] |
| Variable type | planetary transit |
| Astrometry | |
| Radial velocity (Rv) | −12.08±0.65[2] km/s |
| Proper motion (μ) | RA: 25.050(12) mas/yr[2] Dec.: −25.366(11) mas/yr[2] |
| Parallax (π) | 7.0717±0.0135 mas[2] |
| Distance | 461.2 ± 0.9 ly (141.4 ± 0.3 pc) |
| Details[6] | |
| Mass | 0.752±0.081 M☉ |
| Radius | 0.703±0.036 R☉ |
| Temperature | 4680±100 K |
| Metallicity | 0.03±0.20 |
| Rotation | 11.91±0.05 d |
| Rotational velocity (v sin i) | 3.0±3.0 km/s |
| Age | 7.0+6.0 −3.0 Gyr |
| Other designations | |
| TOI-5970, TIC 431701493, WASP-10, GSC 02752-00114, 2MASS J23155829+3127462, UCAC2 42862442, GSC2 N0013312406, 1SWASP J231558.30+312746.4, USNO-B1.0 1214-00586164[5] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
The star is likely older than the Sun, has a fraction of heavy elements close to the solar abundance, and is rotating rapidly, being spun up by the tides raised by the giant planet on a close orbit.[7]
Planetary system
WASP-10 hosts one confirmed exoplanet, WASP-10b. It is a hot Jupiter discovered in 2008.[3]
A candidate second planet with a 5-day period, WASP-10c, was inferred from transit-timing variations of WASP-10b in 2010,[8] but this was refuted in 2013.[9] Instead, there may be a super-Jupiter planet or brown dwarf on a wide (at least 5 AU) orbit, based on radial velocity observations.[10]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 3.21+0.23 −0.24 MJ |
0.0378+0.0013 −0.0014 |
3.09272932(32) | 0.0601+0.0064 −0.0046 |
88.81±0.40° | 1.067±0.064 RJ |
| c (unconfirmed) | 4–90 MJ | 5–30 | — | — | — | — |
