WASP-20
| Observation data J2000
| |
|---|---|
| Constellation | Cetus[1] |
| Right ascension | 00h 20m 38.53504s[2] |
| Declination | −23° 56′ 08.6028″[2] |
| Apparent magnitude (V) | 10.779[3] |
| Characteristics | |
| Spectral type | F9V[4] |
| Details Gyr | |
| Database references | |
| SIMBAD | data |
WASP-20, also known as CD-24 102, is a
Stellar properties
WASP-20 is a star of spectral type F9, aged 7+2
−1 billion years. Its mass is 1.200 ± 0.041 solar masses for a radius of 1.392 ± 0.044 solar radii, or a density of 0.630 ± 0.046 grams per cubic centimeter.[7]
Planetary system
WASP-20b is a transiting hot Jupiter discovered in 2014.[7] WASP-20b orbits WASP-20 in less than five Earth days very close to its star (0.06 AU) in a circular (near-zero eccentricity) orbit. The orbit is inclined by 85.56 ± 0.22° relative to the plane of the sky and is thus edge-on, as necessary for a transit to be observed.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.311+0.019 −0.018 MJ |
0.05999+0.00069 −0.00068 |
4.8996284(33) | <0.039 | 85.56±0.22° | 1.462±0.059 RJ |
See also
References
- ^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
- ^ S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b "CD-24 102". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 April 2024.
- ^ .
- ^ .
- ^ "WASP-20 | NASA Exoplanet Archive".
- ^ .
