HD 70573 b

Planetbox begin
name = HD 70573 b Planetbox star
star = HD 70573
constell = Hydra
RA = RA|8|22|49.9514
DEC = DEC|+01|51|33.552
dist_ly = 149
dist_pc = 45.7
class = G1.2VPlanetbox orbit
semimajor = 1.76 ± 0.05
semimajor_gigameter = 263
periastron = 1.02
periastron_gigameter = 153
apastron = 2.50
apastron_gigameter = 374
eccentricity = 0.4 ± 0.1
period = 851.8 ± 11.6
period_year = 2.332
period_megasecond = 73.60
ang_dist = 38.512
long_peri = 269.6 ± 14.3
t_peri = 2,452,106.54 ± 25.72
semi-amp = 149Planetbox character
mass = >6.1 ± 0.4
radius = ~1.56
density = ~2100
gravity = ~64.9
gravity _earth = 6.62
insolation = 454
insolation_earth = 0.333
temperature = >1200 Planetbox discovery
discovery_date = March 19, 2007
discoverers = Setiawan "et al."
discovery_method = radial velocity
discovery_status = Published

HD 70573 b orbits the youngest RV host star HD 70573 approximately 149 light-years away in the constellation of Hydra. It is a mid-super-Jupiter that orbits 76 percent further than Earth is to the Sun in an eccentric orbit. Due to its young age, the planet is likely to be 1.56 times bigger than Jupiter and glowing red hot. But over the next few billion years it will eventually cool and shrink to a planet 90%-95% the size of Jupiter.

The discovery of the planet is important because it enables the study of debris disks around young stars in relation to presence of planets.

References

* [http://arxiv.org/abs/0704.0441 web preprint]

External links

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