# XO-5b: A Transiting Jupiter-sized Planet with a 4 Day Period

@article{Burke2008XO5bAT,
title={XO-5b: A Transiting Jupiter-sized Planet with a 4 Day Period},
author={Christopher J. Burke and P. R. McCullough and Jeff A. Valenti and Douglas Long and Christopher M. Johns–Krull and Pavel Mach{\'a}lek and Kenneth Allan Janes and Brian W. Taylor and Michael L. Fleenor and Cindy N. Foote and Bruce L. Gary and E. Garc{\'i}a‐Melendo and Joao Gregorio and T. Vanmunster},
journal={The Astrophysical Journal},
year={2008},
volume={686},
pages={1331-1340}
}
• Published 15 May 2008
• Physics, Geology
• The Astrophysical Journal
The star XO-5 (GSC 02959?00729, -->V = 12.1, G8 V) hosts a Jupiter-sized, -->Rp = 1.15 ? 0.12 RJ, transiting extrasolar planet, XO-5b, with an orbital period of 4.2 days. The planet's mass, -->Mp = 1.15 ? 0.08 MJ, and surface gravity, -->gp = 22 ? 5 m s?2, are large for its orbital period compared to most other transiting planets. However, the deviation from the -->Mp-P relationship for XO-5b is not as large as for GJ 436b, HAT-P-2b, and XO-3b. By coincidence, XO-5 overlies the extreme H I…
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