SWEEPS J175853.92−291120.6

SWEEPS J175853.92−291120.6

Artist's rendition of SWEEPS J175853.92-291120.6 (top right) and the planet SWEEPS-04 (center)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sagittarius[1]
Right ascension 17h 58m 53.92s[1]
Declination –29° 11′ 20.6″[1]
Apparent magnitude (V) 18.80[1]
Characteristics
Spectral type F5V[2]
Astrometry
Distance27,700 ly
(8,500[1] pc)
Details
Mass1.24[1] M☉
Radius1.18[1] R☉
Metallicity [Fe/H]0.00[3] dex

SWEEPS J175853.92-291120.6 is a star located in the constellation Sagittarius at a distance of 27,700 light-years from Earth. At least one planet is known to orbit the star.[4]

Characteristics

Little is known about the characteristics of SWEEPS J175853.92-291120.6 . The star has a magnitude of 18 with a mass of 1.24 solar masses and radius of 1.18 solar radii. The designation "SWEEPS J175853.92−291120.6" is named after the project SWEEPS, formally called the Sagittarius Window Eclipsing Extrasolar Planet Search. The project also found its planetary companion.

Planetary system

In 2006, a group of astronomers working on the SWEEPS program announced[1] the discovery of the planet SWEEPS-04 in the system. The planet is a gas giant, who is close to the parent star at 0.05 AU. The planet is classified as a hot Jupiter due to its proximity to the parent star. The planet was discovered through the transit method.

The SWEEPS J175853.92−291120.6 planetary system[1]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
SWEEPS-04 <3.8 MJ 0.055 4.200 – — 0.81 ± 0.10 RJ

See also

References

  1. 1 2 3 4 5 6 7 8 9 Sahu, Kailash C.; et al. (October 2006), "Transiting extrasolar planetary candidates in the Galactic bulge", Nature, 443 (7111): 534–540, arXiv:astro-ph/0610098Freely accessible, Bibcode:2006Natur.443..534S, doi:10.1038/nature05158, PMID 17024085.
  2. ↑ Kashyap, Vinay L.; Drake, Jeremy J.; Saar, Steven H. (November 2008), "Extrasolar Giant Planets and X-Ray Activity", The Astrophysical Journal, 687 (2): 1339–1354, arXiv:0807.1308Freely accessible, Bibcode:2008ApJ...687.1339K, doi:10.1086/591922. Listed as SWEEPS-04 on p. 6.
  3. ↑ Carlberg, Joleen K.; Majewski, Steven R.; Arras, Phil (July 2009), "The Role of Planet Accretion in Creating the Next Generation of Red Giant Rapid Rotators", The Astrophysical Journal, 700 (1): 832–843, arXiv:0906.1587Freely accessible, Bibcode:2009ApJ...700..832C, doi:10.1088/0004-637X/700/1/832.
  4. ↑ "SWEEPS J175853.92-291120.6". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-07-25.
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