description HD 21749 b Overview
HD 21749 b is a confirmed transiting planet orbiting the K-type star HD 21749 in the southern constellation Reticulum. NASA's Transiting Exoplanet Survey Satellite identified its transit in data released in 2019, and follow-up observations established a radius about 2.8 times Earth's and a mass of roughly 23 Earths. Its approximately 35.6-day orbit made it a notable early TESS discovery because it was longer than the periods of most planets found in the mission's first results.
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How good is HD 21749 b?
HD 21749 b scores 6.44/10 (Fair) on Lunoo, making it rated in the Exoplanet category.
What are the best alternatives to HD 21749 b?
See our alternatives page for HD 21749 b for a ranked list with scores. Top alternatives include: TOI-178 f, TOI-178 d, TOI-178 e.
How does HD 21749 b compare to TOI-178 f?
See our detailed comparison of HD 21749 b vs TOI-178 f with scores, features, and an AI-powered verdict.
Is HD 21749 b worth it in 2026?
With a score of 6.44/10, HD 21749 b is a solid option in Exoplanet. See all Exoplanet ranked.
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