HD 213240
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Grus |
| Right ascension | 22h 31m 00.3672s |
| Declination | −49° 25′ 59.773″ |
| Apparent magnitude (V) | 6.80 |
| Absolute magnitude (V) | 3.75 |
| Distance | 132.91 ly (40.75 pc) |
| Spectral type | G0/G1V |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 213240 is a yellow main sequence star located approximately 133 light years (41 parsecs) away in the constellation Grus. The magnitudes were m=6.80 and M=3.75. It is a metal-rich star and more evolved than our sun. Its age has been calculated as being anywhere from 2.7 to 4.6 billion years.[1] A red dwarf companion star was detected in 2005 with a projected separation of 3898 AU.[1]
Planetary system
The Geneva extrasolar planet search team discovered a planet orbiting this star in 2001.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >4.72 ± 0.40 MJ | 1.92 ± 0.11 | 882.7 ± 7.6 | 0.421 ± 0.015 | — | — |
See also
References
- 1 2 Mugrauer; Neuhäuser, R.; Seifahrt, A.; Mazeh, T.; Guenther, E. (2005). "Four New Wide Binaries Among Exoplanet Host Stars". Astronomy and Astrophysics. 440 (3): 1051–1060. arXiv:astro-ph/0507101
. Bibcode:2005A&A...440.1051M. doi:10.1051/0004-6361:20042297. - ↑ 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.
- ↑ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
External links
- "Notes for star HD 213240". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-29.
Coordinates: 
22h 31m 00.3672s, −49° 25′ 59.773″
This article is issued from Wikipedia - version of the 1/25/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.