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HD 74156

This old, yellow star is orbited by three large, gaseous planets. Planet d has been predicted theoretically in a gap between b and c, before it was discovered.

The three planets are:
HD 74156 b, 1.88 times Jupiter's mass, orbits every 51.65 days in a distance of 0.294 AU.
HD 74156 d, 0.396 times Jupiter's mass, orbits every 336.6 days in a distance of 1.01 AU.
HD 74156 c, 8.03 times Jupiter's mass, orbits every 2476 days in a distance of 3.85 AU.

Constellation: Hydra
Age: 7.38 billion years
Distance: 210.6 light-years
Spectral class: G0
Visual magnitude: 7.62
Luminosity: 3.06 * Sun
Mass: 1.24 * Sun
Diameter: 1.58 * Sun

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01/29/2008

    HD 74156
Graphic: YARL, Wikimedia Commons, licensed under the Creative Commons Attribution ShareAlike 2.5 License

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