HD 1461 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 1461 | |
| Constellation | Cetus | |
| Right ascension | (α) | 00h 18m 41.62s |
| Declination | (δ) | −08° 03′ 9.5″ |
| Apparent magnitude | (mV) | 6.47 |
| Distance | 76 ly (23.3 pc) | |
| Spectral type | G0V | |
| Mass | (m) | 1.08 ± 0.04 M☉ |
| Radius | (r) | 1.095 ± 0.026 R☉ |
| Temperature | (T) | 5765 ± 18 K |
| Metallicity | [Fe/H] | 0.19 ± 0.01 |
| Age | 6.3 Gyr | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.063434 ± 0.000008 AU (9.4896 Gm) |
| Periastron | (q) | 0.061078 AU (9.1371 Gm) |
| Apastron | (Q) | 0.065791 AU (9.8422 Gm) |
| Eccentricity | (e) | 0.04 ± 0.01 |
| Orbital period | (P) | 5.7722 ± 0.0011 d |
| (138.53 h) | ||
| Orbital speed | (υ) | 119.96 km/s |
| Argument of periastron |
(ω) | 186 ± 63° |
| Time of periastron | (T0) | 2450366.936 JD |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 8.1 ± 0.7 M⊕ |
| Discovery information | ||
| Discovery date | 2009-12-14 | |
| Discoverer(s) | Vogt et al. | |
| Discovery method | Radial velocity | |
| Discovery site | Keck Observatory Anglo-Australian Observatory | |
| Discovery status | Preprint[1] | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 1461 b is an extrasolar planet, orbiting the 6th magnitude G-type star HD 1461, 76 light years away in the constellation Cetus. This planet has a minimum mass 8.1 times that of Earth and orbits at a precise distance of 0.063434 AU with an eccentricity of 0.04. It is currently unknown whether the planet is a gas giant like Uranus or Neptune, or has terrestrial composition like CoRoT-7 b. This planet was discovered on 14 December 2009 from using radial velocity method at Keck and Anglo-Australian Observatories.[1][2]
References
- 1 2 Rivera, Eugenio (2009). "A Super-Earth Orbiting the Nearby Sun-like Star HD 1461". The Astrophysical Journal 708 (2): 1492–1499. arXiv:0912.2566 [astro-ph.EP]. Bibcode:2010ApJ...708.1492R. doi:10.1088/0004-637X/708/2/1492.
- ↑ Tim Stephens (2009-12-14). "New planet discoveries suggest low-mass planets are common around nearby stars". UCSC News. UC Santa Cruz. Retrieved 2009-12-14.
Coordinates: 
00h 18m 41.62s, −8° 03′ 9.5″
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