HD 213240 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 213240 | |
| Constellation | Grus | |
| Right ascension | (α) | 22h 31m 00.3672s |
| Declination | (δ) | −49° 25′ 59.773″ |
| Apparent magnitude | (mV) | 6.80 |
| Distance | 132.91 ly (40.75 pc) | |
| Spectral type | G0/G1V | |
| Orbital elements | ||
| Semi-major axis | (a) | 1.92 AU (287 Gm) |
| Periastron | (q) | 1.11 AU (166 Gm) |
| Apastron | (Q) | 2.73 AU (408 Gm) |
| Eccentricity | (e) | 0.421 ± 0.015 |
| Orbital period | (P) | 882.7 ± 7.6 d (2.417 y) |
| Orbital speed | (υ) | 23.7 km/s |
| Argument of periastron |
(ω) | 201.0 ± 3.2° |
| Time of periastron | (T0) | 2451499 ± 12 JD |
| Semi-amplitude | (K) | 96.6 ± 2.0 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 4.72 MJ |
| Discovery information | ||
| Discovery date | April 4, 2001 | |
| Discoverer(s) | Santos et al.[1] | |
| Discovery method | Doppler spectroscopy | |
| Discovery site | Geneva Extrasolar Planet Search | |
| Discovery status | Published[1] | |
HD 213240 b is an extrasolar planet located approximately 133 light-years (41 parsecs) away in the constellation of Grus, orbiting the star HD 213240.[1]
The origin of this known planet came from the country of Switzerland and the astronomer Santos. The date was on April 4, 2001 and the method was Doppler spectroscopy.
See also
References
- 1 2 3 Santos, N. C.; et al. (2001). "The CORALIE survey for southern extra-solar planets VI. New long period giant planets around HD 28185 and HD 213240". Astronomy and Astrophysics. 379 (3): 999–1004. Bibcode:2001A&A...379..999S. doi:10.1051/0004-6361:20011366.
External links
- "Notes for planet HD 213240 b". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-29.
- "HD 213240". Exoplanets. Retrieved 2008-08-29.
Coordinates: 
22h 31m 00.3672s, −49° 25′ 59.773″
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