HD 12661

HD 12661 is a yellow star (spectral type G6) in the constellation of Aries. It has two extrasolar planets. It is 121 light years from Earth and is one and a half times larger than our Sun.

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Orbit

Planetary system

PlanetboxOrbit
exoplanet = b
mass = >2.34 ± 0.19
period = 262.53 ± 0.27
semimajor = 0.834 ± 0.048
eccentricity = 0.361 ± 0.011PlanetboxOrbit
exoplanet = c
mass = >1.83 ± 0.16
period = 1679 ± 29
semimajor = 2.86 ± 0.17
eccentricity = 0.017 ± 0.029

References

*cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/320224 | author=Fischer "et al." | title=Planetary Companions to HD 12661, HD 92788, and HD 38529 and Variations in Keplerian Residuals of Extrasolar Planets | journal=The Astrophysical Journal | year=2002 | volume=551 | issue=2 | pages=1107 – 1118 | doi=10.1086/320224
*cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/367889 | author=Fischer "et al." | title=A Planetary Companion to HD 40979 and Additional Planets Orbiting HD 12661 and HD 38529 | journal=The Astrophysical Journal | year=2003 | volume=586 | issue=2 | pages=1394 – 1408 | doi=10.1086/367889
*cite journal | doi= 10.1086/504701 | author=Butler "et al." | title=Catalog of Nearby Exoplanets | journal=The Astrophysical Journal | volume=646 | pages=505 – 522 | year=2006 ( [http://xxx.lanl.gov/abs/astro-ph/0607493 web Preprint] )
* [http://planetquest1.jpl.nasa.gov/atlas/atlas_skymap.cfm?Star=137 Local Sky Map]
* [http://www.extrasolar.net/star_HD12661.jpgImage HD12661]

ee also

*List of stars with confirmed extrasolar planets

External links

*cite web|url=http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+12661|title=HD 12661|work=SIMBAD| accessdate = 2006-04-14
*cite web|url=http://exoplanet.eu/star.php?st=HD+12661 |title=Notes for star HD 12661|work=The Extrasolar Planets Encyclopaedia| accessdate = 2006-04-14
*cite web|url=http://exoplanets.org/esp/hd12661/hd12661.shtml|title=Two Planets Around HD 12661|work=California & Carnegie Planet Search| accessdate = 2006-04-14
* [http://www.lpl.arizona.edu/~rory/research/xsp/dynamics/ Extrasolar Planet Interactions] by Rory Barnes & Richard Greenberg, Lunar and Planetary Lab, University of Arizona
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