HD 1461 b

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HD 1461 b
Exoplanet List of exoplanets
Parent star
Star HD 1461
Constellation Cetus[1]
Right ascension (α) 00h 18m 41.8674s[2]
Declination (δ) −08° 03′ 10.8058″[2]
Apparent magnitude (mV) 6.47
Distance76.5±0.1[2] ly
(23.47±0.03[2] 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) 0.0634±0.0022[3] AU
Eccentricity (e) <0.131[3]
Orbital period(P) 5.77152±0.00045[3] d
Semi-amplitude (K) 2.28±0.15[3] m/s
Physical characteristics
Minimum mass(m sin i)6.44±0.61[3] 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 Published[4]
Database references
Extrasolar Planets
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 1461 b is an extrasolar planet, orbiting the 6th magnitude G-type star HD 1461, 76.5 light years away in the constellation Cetus. This planet has a minimum mass 6.4 times that of Earth and orbits at a distance of 0.0634 AU with an eccentricity of less than 0.131. 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 announced on 13 December 2009 after it was discovered using radial velocity measurements taken at the Keck and Anglo-Australian Observatories.[4][5]


  1. ^ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
  2. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  3. ^ a b c d e Díaz, R. F.; et al. (2016). "The HARPS search for southern extra-solar planets. XXXVIII. Bayesian re-analysis of three systems. New super-Earths, unconfirmed signals, and magnetic cycles". Astronomy and Astrophysics. 585. A134. arXiv:1510.06446. Bibcode:2016A&A...585A.134D. doi:10.1051/0004-6361/201526729.
  4. ^ a b Rivera, Eugenio J.; et al. (2010). "A Super-Earth Orbiting the Nearby Sun-like Star HD 1461". The Astrophysical Journal. 708 (2): 1492–1499. arXiv:0912.2566. Bibcode:2010ApJ...708.1492R. doi:10.1088/0004-637X/708/2/1492.
  5. ^ Tim Stephens (2009-12-13). "New planet discoveries suggest low-mass planets are common around nearby stars". UCSC News. UC Santa Cruz. Retrieved 2018-10-06.

Coordinates: Sky map 00h 18m 41.62s, −8° 03′ 9.5″