Astronomy: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 (celestial coordinates) | |
|---|---|
| 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 | |
| Distance | 27,700 ly (8,500[1] pc) |
| Details | |
| Mass | 1.24[1] M☉ |
| Radius | 1.18[1] R☉ |
| Metallicity [Fe/H] | 0.00[3] dex |
| Database references | |
| SIMBAD | data |
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, SWEEPS-04, is known to orbit the star.[4]
Characteristics
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 that 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.
| 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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Sahu, Kailash C. et al. (October 2006), "Transiting extrasolar planetary candidates in the Galactic bulge", Nature 443 (7111): 534–540, doi:10.1038/nature05158, PMID 17024085, Bibcode: 2006Natur.443..534S.
- ↑ 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, doi:10.1086/591922, Bibcode: 2008ApJ...687.1339K. Listed as SWEEPS-04 on p. 6.
- ↑ 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, doi:10.1088/0004-637X/700/1/832, Bibcode: 2009ApJ...700..832C.
- ↑ "SWEEPS J175853.92-291120.6". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=SWEEPS+J175853.92-291120.6.
External links
- "SWEEPS-04" (in Russian). планетные системы. http://www.allplanets.ru/star.php?star=SWEEPS-4. Retrieved 26 July 2012.
- "Planet SWEEPS-04". Extrasolar Planets Encyclopaedia. http://exoplanet.eu/catalog/sweeps-04_/.
- This article is based on the Russian Wikipedia article, SWEEPS J175853.92-291120.6
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