KELT-20
| Observation data J2000.0
| |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 38m 38.735s[1] |
| Declination | +31° 31′ 09.22″[1] |
| Apparent magnitude (V) | 7.58[2] |
| Characteristics | |
| Evolutionary stage | main sequence star
|
| Spectral type | A2V[3] |
| Variable type | planetary transit
|
| Details | |
Gyr | |
HIP 96618, MASCARA -2, KELT-20 | |
| Database references | |
| SIMBAD | data |
KELT-20, also known as MASCARA-2, is an A2
light years
away.
Nomenclature
KELT-20 is the star's KELT designation. It is also designated as MASCARA-2 meaning that it is the second star observed by the MASCARA exoplanet search program. Its Henry Draper Catalogue designation is HD 185603, and its Hipparcos designation is HIP 96618.
Planetary system
In 2017, the discovery of the planet KELT-20b was announced.[6][7][8]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 3.382 MJ | 0.05 | 3.6127647 | — | 86.12° | 1.741 RJ |
References
- ^ S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ISBN 978-0333750889.
- .
- ^ eISSN 1538-3881.
- ^ S2CID 119422884.
- S2CID 246210387