description XO-1b Overview
A hot Jupiter discovered in 2006 by the XO wide-field photometric survey and among the earliest transiting exoplanets to have its atmospheric composition probed by transmission spectroscopy.
insights Why this score
XO-1b ranks #258 of 269 in the Exoplanet ranking, behind HD 183263 c, ahead of Kepler-62c.
help XO-1b FAQ
How good is XO-1b?
XO-1b scores 5.06/10 (Mediocre) on Lunoo, making it rated in the Exoplanet category.
What are the best alternatives to XO-1b?
See our alternatives page for XO-1b for a ranked list with scores. Top alternatives include: HD 209458 b, KELT-9b, HD 189733 b.
How does XO-1b compare to HD 209458 b?
See our detailed comparison of XO-1b vs HD 209458 b with scores, features, and an AI-powered verdict.
Is XO-1b worth it in 2026?
With a score of 5.06/10, XO-1b is a solid option in Exoplanet. See all Exoplanet ranked.
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