Wolfram|Alpha

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Input interpretation:

upsilon Andromedae b  (exoplanet)


Properties:

orbit center | upsilon Andromedae\ndistance from Earth | 43.9 ly\nmass | 1.30511×10^27 kg\n218.531 M_earth\norbital period | 111 h\nsemimajor axis | 5.505 million mi


Discovery:

discovery method | radial velocity\ndiscovery year | 1997  (20 years ago)

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