HD 240237
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 23h 15m 42.22361s[1] |
| Declination | +58° 02′ 35.6654″[1] |
| Apparent magnitude (V) | 8.19 |
| Distance | 4900 ly (1500 pc) |
| Spectral type | K2III[1] |
HD 240237 is a red giant approximately 5000 light-years away in the constellation Cassiopeia.[1] The star has an exoplanet orbiting slightly within the star's habitable zone with a temperature of roughly 510 Celsius (950 Fahrenheit),[2] comparing it to Venus in the Solar System. It was detected by Radial velocity in 2010.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 5.3 MJ | 1.9 | 745.7 ±13.8 days (2.043 ± 0.038 years) |
0.4 ±0.1 | — | — |
About the Star
Name: HD 240237 Distance: 1500.0 pc Spectral type: K2III Apparent magnitude: V 8.19 Mass: 1.69 (± 0.42) MSun Age: — Effective temperature: 4361.0 (± 10.0) K Radius: 32.0 (± 1.0) RSun Metallicity: [Fe/H] -0.26 (± 0.07) RA2000 23:15:42.0
About the Planet
Name: HD 240237 b Discovered in 2010 M × sin i 5.3 MJ Semi-major axis 1.9 AU Orbital period 745.7 (± 13.8) day Eccentricity 0.4 (± 0.1) ω 108.1 (± 21.8) deg Tperi 44292.0 (± 28.3) JD
References
- 1 2 3 4 "HD 240237". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 7 June 2014.
- ↑ Rein, Hanno. "Open Exoplanet Catalogue - system - HD 204237". http://openexoplanetcatalogue.com. github. Retrieved 8 June 2014. External link in
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