HR 8799 d

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What Wikipedia says

HR 8799 d is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis star HR 8799. It has a mass 9±3 times that of Jupiter and a radius 26% larger than Jupiter's.

Excerpt from the Wikipedia article “HR 8799 d”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Aldaron, a.k.a. Aldaron, CC BY-SA 3.0, via Wikimedia Commons.