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Exoplanet List of exoplanets
Exoplanet Comparison WASP-10 b.png
Size comparison of WASP-10b with Jupiter.
Parent star
Star WASP-10
Constellation Pegasus
Right ascension (α) 23h 15m 58s
Declination (δ) +31° 27′ 46″
Apparent magnitude (mV) 12.70
Distance 290±70 ly
(90±20 pc)
Spectral type K5
Orbital elements
Semi-major axis (a) 0.0371+0.0014
Eccentricity (e) 0.057+0.011
Orbital period (P) 3.0927616+1.12E-5
Inclination (i) 86.8+0.6
Argument of
(ω) 2.737+0.194
Time of transit (Tt) 2454357.85803+0.00042
Physical characteristics
Mass (m) 3.06+0.23
Radius (r) 1.08 ± 0.02 RJ
Density (ρ) 3220 kg m−3
Surface gravity (g) 6.93 g
Temperature (T) 1300
Discovery information
Discovery date April 1, 2008
Discoverer(s) Cameron et al. (SuperWASP)
Discovery method Transit
Discovery site SAAO
Discovery status Published
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

WASP-10b is an extrasolar planet discovered in 2008 by SuperWASP using the transit method. Follow-up radial velocity observations showed that it is three times more massive than Jupiter, while the transit observations showed that its radius is 8% bigger than Jupiter, quite small for a Hot Jupiter but this is due to its high mass. This makes the density of this planet similar to our Moon. Its takes 3 days to orbit around the star, in contrast to 365 days for the Earth to go around the Sun.[1] [2] It is the only confirmed extrasolar planet in WASP-10's planetary system, since the only other detected planet in WASP-10's planetary system, WASP-10c, is still unconfirmed.[3]

See also[edit]


  1. ^ Johnson; Winn, Joshua N.; Cabrera, Nicole E.; Carter, Joshua A. (2009). "A SMALLER RADIUS FOR THE TRANSITING EXOPLANET WASP-10b". The Astrophysical Journal Letters. 692 (2): L100–L104. arXiv:0812.0029Freely accessible. Bibcode:2009ApJ...692L.100J. doi:10.1088/0004-637X/692/2/L100. 
  2. ^ Christian; Gibson, N. P.; Simpson, E. K.; Street, R. A.; Skillen, I.; Pollacco, D.; Collier Cameron, A.; Joshi, Y. C.; et al. (December 29, 2008). "WASP-10b: a 3MJ, gas-giant planet transiting a late-type K star". Monthly Notices of the Royal Astronomical Society. 392 (4): 1585–1590. arXiv:0806.1482Freely accessible. Bibcode:2009MNRAS.392.1585C. doi:10.1111/j.1365-2966.2008.14164.x. 
  3. ^ "Extrasolar Planets Encyclopaedia - WASP-10". 

External links[edit]

Media related to WASP-10b at Wikimedia Commons

Coordinates: Sky map 23h 15m 58s, +31° 27′ 46″