SWEEPS J175902.67−291153.5

SWEEPS J175902.67-291153.5 is an F9 spectral class star located in the constellation Sagittarius, approximately 27,710 light-years from Earth. At least one planet, SWEEPS-11, orbits the star, which is currently, along with SWEEPS-04, the most distant known exoplanets.

It has an apparent magnitude of 19 and an absolute magnitude of 5.95. The star's mass is 1.10 solar masses, and its radius is 1.45 solar radii. The designation "SWEEPS J175902.67-291153.5" comes after the Sagittarius Window Eclipsing Extrasolar Planet Search (SWEEPS) project. This project also discovered its planetary companion.

History of discovery

In 2004, the star came into the field of view of the Hubble Space Telescope. As part of the SWEEPS program, 16 exoplanet candidates were discovered around stars in the Galactic Center, including one exoplanet around SWEEPS J175902.67-291153.5.

Planetary system

In 2006, a group of astronomers working on the SWEEPS program announced the discovery of the planet SWEEPS-11 in the system. The planet is a hot Jupiter, nearly 10 times the mass of Jupiter, orbiting its parent star closely at a distance of 0.03 AU. The planet completes a full orbit around its star in approximately 1.8 days or 43 hours. The planet was discovered using the transit method.

See also

• List of stars in Sagittarius
• SWEEPS J175853.92−291120.6

External links

• This article is based on the Russian Wikipedia article, SWEEPS J175902.67−291153.5