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Exoplanet List of exoplanets
Exoplanet Comparison HAT-P-5 b.png
Size comparison of HAT-P-5b with Jupiter.
Parent star
Star HAT-P-5
Constellation Lyra
Right ascension (α) 18h 17m 37.299s
Declination (δ) +36° 37′ 16.88″
Distance 1100 ± 100 ly
(340 ± 30 pc)
Spectral type G
Orbital elements
Semi-major axis (a) 0.04075 ± 0.00076 AU
Periastron (q) 0.04075 AU
Apastron (Q) 0.04075 AU
Eccentricity (e) 0
Orbital period (P) 2.788491 ± 2.5e-5 d
(0.007634339 y)
Orbital speed (υ) 159.5 km/s
Inclination (i) 86.75 ± 0.44°
Time of transit (Tt) 2,454,241.77663 ± 0.00022 JD
Physical characteristics
Mass (m) 1.06 ± 0.11 MJ
Radius (r) 1.26 ± 0.05 RJ
Density (ρ) 660 ± 110 kg m−3
Discovery information
Discovery date October 9, 2007
Discoverer(s) Bakos et al.
Discovery method transit
Discovery status Published
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

HAT-P-5b is a transiting extrasolar planet located approximately 1100 light-years away in the constellation of Lyra, orbiting the star HAT-P-5. It is a hot Jupiter with a mass 6% greater than Jupiter and a radius 26% greater than Jupiter, corresponding to a density of 0.66 g/cm3, which is less than water. This planet was found by Bakos et al. on October 9, 2007.[1]

See also[edit]


  1. ^ Bakos, G. Á.; et al. (2007). "HAT-P-5b: A Jupiter-like Hot Jupiter Transiting a Bright Star". The Astrophysical Journal Letters. 671 (2): L173–L176. arXiv:0710.1841Freely accessible. Bibcode:2007ApJ...671L.173B. doi:10.1086/525022. 

External links[edit]

Media related to HAT-P-5 b at Wikimedia Commons

Coordinates: Sky map 18h 17m 37.299s, +36° 37′ 16.88″