» Extrasolar Planet Guide » Companions of Normal Stars » HD 11977

Yellow Giant Star


Sky field around object from
The STScI Digitized Sky Survey

Constellation: Hydrus
Right Ascension: 01 54 56
Declination: -67 38 50
Distance from Sol: 216.89 Light Years
Alternate Designations: HD 11977
Spectral Type: G8.5 III
Apparent Magnitude: 4.7
B-V Color: 0.931
Mass: 1.91 Solar Masses
Radius: 10.09 Solar Radii
Effective Temperature: 4970 Kelvin
Metallicity: -0.21 [Fe/H]
0.61 times Solar
Age: 500 - 2000 Million Years
Rotation: 230 days
Inner Edge of Habitability Zone: 3.74 AU
Outer Edge of Habitability Zone: 11.65 AU
Estimated Stellar Lifespan 1435 million years

HD 11977 is an intermediate-mass giant star with a radius about 10 times that of the sun. This star most likely began as an A-type star, giving indirect evidence for the possibility of planets around such stars. It is currently a cool evolved giant undergoing helium core and hydrogen shell fusion.


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