WASP-18

WASP-18
Observation data
Epoch J2000.0[1]      Equinox
Constellation Phoenix[2]
Right ascension 01h 37m 24.95s[2]
Declination -45° 40′ 40.8″[2]
Apparent magnitude (V) 9.29[2]
Other designations
HD 10069, HIP 7562, PPM 306061, SAO 215585
Database references
SIMBAD data
NStED data
Extrasolar Planets
Encyclopaedia		 data

WASP-18 is a magnitude 9 star located in the Phoenix constellation of the southern hemisphere.[2] It has a mass of 1.25 solar masses[3].

Planetary system

In 2009 SuperWASP project announced that a large hot Jupiter type extrasolar planet, WASP-18b, was orbiting very close to this star.[1]

The WASP-18 system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity
b ~10[1] MJ 0.020206 0.94145299[2] 0.0092

References

  1. ^ a b c Hellier, C; Anderson, DR; Cameron, AC; Gillon, M; Hebb, L; Maxted, PF; Queloz, D; Smalley, B et al. (2009-08-27). "An orbital period of 0.94 days for the hot-Jupiter planet WASP-18b". Nature (Nature Publishing Group) 460 (7259): 1098–1100. Bibcode 2009Natur.460.1098H. doi:10.1038/nature08245. PMID 19713926. http://www.nature.com/nature/journal/v460/n7259/full/nature08245.html. 
  2. ^ a b c d e f "WASP-18b". Exoplanet Transit Database. http://var2.astro.cz/ETD/etd.php?STARNAME=WASP-18&PLANET=b. Retrieved 2009-08-29. 
  3. ^ PlanetQuest: WASP-18 b

See also

Coordinates: 01h 37m 25s, −45° 40′ 41″