HD 1461 b

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HD 1461 b
Extrasolar planet List of extrasolar planets
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
Semimajor 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

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[edit]

  1. ^ a b Rivera, Eugenio (2009). "A Super-Earth Orbiting the Nearby Sun-like Star HD 1461". arXiv:0912.2566v1 [astro-ph.EP].
  2. ^ 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: Sky map 00h 18m 41.62s, −8° 03′ 9.5″