HAT-P-9b

Planetbox begin
name = HAT-P-9b Planetbox star
star = HAT-P-9
constell = Auriga
RA = RA|07|20|40.479
DEC = DEC|+37|08|26.17
dist_ly = 1560 ± 190
dist_pc = 480 ± 60
class = FPlanetbox orbit
semimajor = 0.0528 ± 0.002
semimajor_gigameter = 7.9
semimajor_microparsec = 0.256
periastron = 0.0527
periastron_gigameter = 7.88
periastron_microparsec = 0.255
apastron = 0.0529
apastron_gigameter = 7.91
apastron_microparsec = 0.256
eccentricity = ~0.0012
period = 3.92289 ± 0.00004
period_year = 0.0107401
period_megasecond = 0.338938
ang_dist = 0.11
long_peri =
t_transit = 2454417.9077 ± 0.0003
semi-amp = Planetbox character
mass = 0.78 ± 0.09
mass_earth = 250
radius = 1.4 ± 0.06
radius_earth = 15
radius_megameter = 96
density = 380
gravity = 10.3
gravity_earth = 1.05
insolation = 1200000
insolation_earth = 910
temperature = ~1407 Planetbox discovery
discovery_date = June 26, 2008
discoverers = Shporer et al.
discovery_method = Transit
discovery_site = SuperWASP
discovery_status = Published Planetbox catalog
names = GSC 02463-00281b, TYC 2463-281-1b, 2MASS J07204044+3708263bPlanetbox reference
star=HAT-P-9
planet=b

HAT-P-9b is an extrasolar planet approximately 1560 light years away in the constellation Auriga. This planet was found by the transit method on June 26, 2008. It has mass 78% that of Jupiter and radius 140% that of Jupiter. As for all the transiting planets excluding HD 17156 b, this planet is so-called hot Jupiter, meaning this Jupiter-like planet orbits extremely close to the parent star, taking only 3.92 days to orbit at the average distance of 7.9 gigameters.

References

* cite journal |url=http://adsabs.harvard.edu/abs/2008arXiv0806.4008S |author=Shporer, A.; Bakos, G. A.; Bouchy, F.; Pont, F.; Kovacs, G.; Latham, D. W.; Sipocz, B.; Torres, G.; Mazeh, T.; Esquerdo, G. A.; Pal, A.; Noyes, R. W.; Sasselov, D. D.; Lazar, J.; Papp, I.; Sari, P.; Kovacs, G.

title=HAT-P-9b: A Low Density Planet Transiting a Moderately Faint F star |journal=ARXIV |eprint=0806.4008 |class=astro-ph |month=June |year=2008 |volume= |issue= |pages=