» Extrasolar Planet Guide » upsilon Andromedae

Yellow Main Sequence Star


Constellation: Andromeda
Right Ascension: 01 36 48.527
Declination: 41 24 38.71
Distance from Sol: 52 Light Years
Alternate Designations: uAnd
HR 458
HD 9826
Spectral Type: F8 V
Apparent Magnitude: 4.09
B-V Color: 0.54
Mass: 1.34 Solar Masses
Radius: 1.66 Solar Radii
Effective Temperature: 6200 Kelvin
Metallicity: 0.09 [Fe/H]
1.23 times Solar
Age: 5000 Million Years
Inner Edge of Habitability Zone: 0.95 AU
Outer Edge of Habitability Zone: 2.98 AU
Estimated Stellar Lifespan 4156 million years

In a 1999 study by Trilling et al., no Kuiper Belt was found around upsilon Andromedae.

upsilon Andromedae was the first star with a confirmed multi-planet system discovered.


View a VRML model of the upsilon Andromedae system. Please be patient while the file downloads.

For a VRML tour of our galaxy's exoplanets, check out Extrasolar VR.


Skymap created with John Walker's online Your Sky Virtual Telescope

View the Night Sky from upsilon Andromedae...

Cylindrical All Sky View
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Northern Hemisphere
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Southern Hemisphere
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