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Upsilon Andromedae
Upsilon Andromedae was the first star determined to have more than one extrasolar planet. So far, three such objects have been discovered within the system; all three are believed to be gas giants.
The Three Extrasolar Planets of Upsilon Andromedae
- A
- B
- Distance from UA: 0.83AU
- Mass: 2.11 MJ
- Orbital Period: 242 days
- C
- Distance from UA: 2.5AU
- Mass: 4.61 MJ
- Orbital Period: 3.5 years
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