HD 12661 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 12661 | |
| Constellation | Aries | |
| Right ascension | (α) | 02h 04m 34.29s |
| Declination | (δ) | +25° 24′ 51.5″ |
| Apparent magnitude | (mV) | 7.43 |
| Distance | 114 ± 2 ly (35.0 ± 0.7 pc) | |
| Spectral type | G6V | |
| Mass | (m) | 1.07 M☉ |
| Radius | (r) | 1.12 R☉ |
| Temperature | (T) | 5742 K |
| Metallicity | [Fe/H] | 0.293 |
| Age | 7.05 Gyr | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.834 ± 0.048 AU |
| Eccentricity | (e) | 0.361 ± 0.011 |
| Orbital period | (P) | 262.53 ± 0.27 d |
| Argument of periastron |
(ω) | 296.3±2.6° |
| Time of periastron | (T0) | 2,450,214.1 ± 2.9 JD |
| Semi-amplitude | (K) | 74.19 ± 0.85 m/s |
| Physical characteristics | ||
| Mass | (m) | >2.34 ± 0.19 MJ |
| Discovery information | ||
| Discovery date | April 4, 2001 | |
| Discoverer(s) | Fischer et al. | |
| Discovery method | Radial velocity | |
| Discovery site | California & Carnegie Planet Search  USA | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 12661 b is a giant exoplanet two and a half times the mass of Jupiter orbiting around the star HD 12661.[1]
References
- ↑ Fischer, Debra A.; et al. (2001). "Planetary Companions to HD 12661, HD 92788, and HD 38529 and Variations in Keplerian Residuals of Extrasolar Planets". The Astrophysical Journal. 551 (2): 1107–1118. Bibcode:2001ApJ...551.1107F. doi:10.1086/320224.
- Butler; 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.
Coordinates: 
02h 04m 34.36s, +25° 24′ 53″
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