SWEEPS-11

SWEEPS-11 is an extrasolar planet orbiting SWEEPS J175902.67−291153.5 in the constellation Sagittarius, approximately 27,710 light years away from the Solar System (based on a distance modulus of 14.1), making it (along with SWEEPS-04) the most distant exoplanet(s) known.^[2] This planet was found in 2006 by the Sagittarius Window Eclipsing Extrasolar Planet Search (SWEEPS) program that uses the transit method.

SWEEPS - 11

Size comparison of SWEEPS-11 with Jupiter.
Discovery
Discovered by	SWEEPS.[1]
Discovery date	October 4, 2006
Detection method	Transit
Orbital characteristics
Semi-major axis	0.03 AU (4,500,000 km)
Orbital period (sidereal)	1.796 d
Inclination	>84
Star	SWEEPS J175902.67−291153.5
Physical characteristics
Mean radius	1.13±0.21 RJ
Mass	9.7±5.6 MJ

This hot Jupiter has a mass 9.7 times that of Jupiter and a radius of 1.13 times that of Jupiter, but the uncertainty in this value is large, around 21%. The planet orbits at about 1.75 times closer to the star than 51 Pegasi b is to 51 Pegasi, taking only 1.8 days or 43 hours to orbit the star. It is also the most distant planet yet discovered.

See also

• SWEEPS-04
• SWEEPS-10