WASP-61
Star in the constellation Lepus
From Wikipedia, the free encyclopedia
WASP-61 is a single F-type main-sequence star about 1,580 light-years away in the constellation Lepus. The star is likely younger than the Sun at approximately 3.8+1.8
−0.9 billion years. WASP-61 is depleted in heavy elements, having just 40% of the solar abundance of iron.[6]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lepus[1] |
| Right ascension | 05h 01m 11.91868s[2] |
| Declination | −26° 03′ 14.9676″[2] |
| Apparent magnitude (V) | 12.49[3] |
| Characteristics | |
| Evolutionary stage | Main sequence[2] |
| Spectral type | F7V[4] |
| Astrometry | |
| Radial velocity (Rv) | 18.90±0.75[2] km/s |
| Proper motion (μ) | RA: 0.532 mas/yr[2] Dec.: 3.233 mas/yr[2] |
| Parallax (π) | 2.0649±0.0094 mas[2] |
| Distance | 1,580 ± 7 ly (484 ± 2 pc) |
| Details[5] | |
| Mass | 1.22±0.07 M☉ |
| Radius | 1.36±0.03 R☉ |
| Surface gravity (log g) | 4.21±0.21[6] cgs |
| Temperature | 6265±168[6] K |
| Metallicity [Fe/H] | -0.38±0.11[6] dex |
| Rotational velocity (v sin i) | 10.3±0.5 km/s |
| Age | 3.8+1.8 −0.9 Gyr |
| Other designations | |
| TOI-439, TIC 13021029, WASP-61, TYC 6469-1972-1, 2MASS J05011191-2603149[3] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
Planetary system
In 2012 a transiting superjovian planet, WASP-61b, was detected on a tight, circular orbit.[4] Its equilibrium temperature is 1565±35 K.[4]
The planetary orbit is well aligned with the equatorial plane of the star, misalignment equal to 4.0+17.1
−18.4°.[7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 2.05+0.18 −0.17 MJ |
0.05146+0.00097 −0.00099 |
3.8559000±0.000003 | <0.074 | 89.35+0.45 −0.66[4]° |
1.41±0.22[8] RJ |
