GQ Lupi b

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What Wikipedia says

GQ Lupi b, or GQ Lupi B is a substellar companion to the T Tauri star GQ Lupi. Classified as either an exoplanet or a brown dwarf, this object is still in the early stages of its formation, accreting gas from its circumplanetary disk.

Excerpt from the Wikipedia article “GQ Lupi b”, 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.