SWEEPS-10

Starbox begin
name=SWEEPS J175902.00−291323.7Starbox observe
epoch=J2000
ra=17h 59m 02.00s
dec=-29° 13' 23.7"'
appmag_v=26.23
constell=Sagittarius
- style="vertical-align: top;"
- style="vertical-align: top;"
Distance
6500 ly
(2000 pc)Starbox detail
mass=0.44
radius=0.41Starbox reference
Simbad=SWEEPS%20J175902.00-291323.7

SWEEPS-10 is, as of June 2007, the planet candidate with the shortest orbital period yet found. It completes an orbit of its star (designated SWEEPS J175902.00−291323.7) in just 10 hours. Located only 1.2 million kilometers from its star (roughly three times the distance between the Earth and the Moon), the planet is among the hottest ever detected; its estimated temperature is approximately 1650 degrees Celsius. "This star-hugging planet must be at least 1.6 times the mass of Jupiter, otherwise the star's gravitational muscle would pull the planet apart," said team leader Kailash Sahu of the Space Telescope Science Institute in Baltimore, Maryland. Such ultra-short period planets (USPPs) seem to occur only around dwarf stars.

The small star's relatively low temperature allows the planet to exist. "USPPs occur preferentially around normal red dwarf stars that are smaller and cooler than our Sun," Sahu said. [ [http://www.astronomy.com/asy/default.aspx?c=a&id=4568 Hubble's SWEEPS 10] Jeremy McGovern, October 4, 2006, "Astronomy Magazine".]

Planetbox begin
name = SWEEPS-10 Planetbox orbit
semimajor = 0.008
period = 0.424
inclination = >84
ang_dist = Planetbox character
mass = 1.6
radius = 1.24±0.23 Planetbox discovery
discovery_date = October 4, 2006
discoverers = Jeremy McGovern
discovery_method = Transit
discovery_status = Unconfirmed

ee also

*SWEEPS stands for Sagittarius Window Eclipsing Extrasolar Planet Search
*SWEEPS-04
*SWEEPS-11

References

* http://exoplanet.eu/star.php?st=SWEEPS-10
*cite journal | url=http://www.nature.com/nature/journal/v443/n7111/abs/nature05158.html | author=Sahu "et al." | title=Transiting extrasolar planetary candidates in the Galactic bulge | journal=Nature | format=abstract | volume=443 | pages=534–540 | year=2006 | doi=10.1038/nature05158 ( [http://fr.arxiv.org/abs/astro-ph/0610098 web Preprint] )