SWEEPS J175853.92−291120.6
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 | |
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
[edit]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
[edit]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
[edit]References
[edit]- ^ a b c d e f g h i Sahu, Kailash C.; et al. (October 2006), "Transiting extrasolar planetary candidates in the Galactic bulge", Nature, 443 (7111): 534–540, arXiv:astro-ph/0610098, Bibcode:2006Natur.443..534S, doi:10.1038/nature05158, PMID 17024085, S2CID 4403395.
- ^ 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:0807.1308, Bibcode:2008ApJ...687.1339K, doi:10.1086/591922, S2CID 17515630. 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, arXiv:0906.1587, Bibcode:2009ApJ...700..832C, doi:10.1088/0004-637X/700/1/832, S2CID 18931038.
- ^ "SWEEPS J175853.92-291120.6". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-07-25.
External links
[edit]![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
- "SWEEPS-04" (in Russian). планетные системы. Retrieved 26 July 2012.
- "Planet SWEEPS-04". Extrasolar Planets Encyclopaedia. Archived from the original on 19 October 2012. Retrieved 26 July 2012.
- This article is based on the Russian Wikipedia article, SWEEPS J175853.92-291120.6