Extrasolar major planet| List of extrasolar planets|
Artists impression of the planetary outline around the red overshadow Gliese 581. The five Earth-mass planet (seen in foreground - Gliese 581 c) makes a full orbit around the brain in 13 days, the other two in 5 (the blue, Neptunian-like planet - Gliese 581 b) and 84 days (the most remote one, Gliese 581 d).|
set up star|
Star| Gliese 581|
Constellation| Libra|
Right ascent| (?)| 15h 19m 26s|
Declination| (?)| ?07° 43? 20?|
Apparent magnitude| (mV)| 10.55|
exceed| 20.3 ± 0.3 ly
(6.2 ± 0.1 pc)|
Spectral type| M3V|
Mass| (m)| 0.31Â M?|
Radius| (r)| 0.29Â R?|
Temperature| (T)| 3480 ± 48 K|
Metallicity| [Fe/H]| -0.33 ± 0.12|
Age| | 7 11Â Gyr|
orbital elements
Epoch JD 2451409.762[1]|
Semimajor axis| (a)| 0.072993 ± 0.000022[1] AU|
Eccentricity| (e)| 0[1]|
Orbital period| (P)| 12.9191 ± 0.0058[1] d
(0.03537 y)|
 |  | (310.06 h)|
soaked anomaly| (M)| 33 ± 19[1]°|
Semi-amplitude| (K)| 3.30 ± 0.19[1] m/s|
Physical characteristics|
minimum mass| (m sin i)| 5.6 ± 0.
3[1] M?|
husking information|
breakthrough date| April 4, 2007
April 24, 2007 (announced)|
Discoverer(s)| Stéphane Udry et al.|
Detection method| Radial velocity|
Discovery site| La Silla Observatory|
Discovery status| publish|
Database references|
Extrasolar Planets
Encyclopaedia| data|
SIMBAD| data|
Gliese 581 c (pronounced /??li?z?/) or Gl 581 c is a planet orbiting the red dwarf star Gliese 581.[2] It is the second planet discovered in the carcass and the third in order from the star. With a mass at least 5.6 times that of the Earth,[1] it is classified as a super-Earth (a planet of 1 to 10 Earth masses).[3]If you want to get a full essay, order it on our website: Orderessay
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