| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 17 56 35.51 |
| Declination | –29° 32′ 21.2″ |
| Apparent magnitude (V) | 16.560< |
| Characteristics | |
| Spectral type | G |
| Variable type | EP |
| Astrometry | |
| Distance | ~5,000 ly (~1,500 pc) |
| Details | |
| Mass | 1.17 ± 0.04 M☉ |
| Radius | 1.32 ± 0.06 R☉ |
| Other designations | |
| V5157 Sagittarii, SBC9 2452 | |
| Database references | |
| SIMBAD | data |
OGLE-TR-56 is a dim, distant, magnitude 17 Sun-like star located approximately 1,500 parsecs (4,900 light-years) away in the constellation of Sagittarius. This star is listed as an eclipsing type variable star with the eclipse due to the passage of the planet as noted in the discovery papers.
Planetary system
In 2002, a possible planet was discovered transiting the star, and after additional observations to rule out false positives, it was confirmed. At the time of discovery it was the shortest-period planet.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.29 ± 0.12 MJ | 0.0225 ± 0.0004 | 1.211909 ± 0.000001 | 0 | — | — |
See also
References
- ^ "SIMBAD query result: V* V5157 Sgr -- Star showing eclipses by its planet". Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-30.
- ^ Planet : OGLE-TR-56 b, Extrasolar Planets Encyclopaedia. Accessed on line August 22, 2008.
- "General Catalogue of Variable Stars Query results". Sternberg Astronomical Institute, Moscow, Russia. Sternberg Astronomical Institute. Retrieved 2009-04-30.
- ^ Pont, F.; et al. (2007). "The "666" collaboration on OGLE transits I. Accurate radius of the planets OGLE-TR-10b and OGLE-TR-56b with VLT deconvolution photometry". Astronomy and Astrophysics. 465 (3): 1069–1074. arXiv:astro-ph/0610827. Bibcode:2007A&A...465.1069P. doi:10.1051/0004-6361:20066645. S2CID 115760695.
- ^ Udalski, A.; et al. (2002). "The Optical Gravitational Lensing Experiment. Search for Planetary and Low-Luminosity Object Transits in the Galactic Disk. Results of 2001 Campaign - Supplement". Acta Astronomica. 52 (2): 115–128. arXiv:astro-ph/0207133. Bibcode:2002AcA....52..115U.
- Konacki, Maciej; et al. (2003). "High-Resolution Spectroscopic Follow-up of OGLE Planetary Transit Candidates in the Galactic Bulge: Two Possible Jupiter-Mass Planets and Two Blends". The Astrophysical Journal. 597 (2): 1076–1091. arXiv:astro-ph/0306542. Bibcode:2003ApJ...597.1076K. doi:10.1086/378561. S2CID 53610157.
- Konacki, Maciej; et al. (2003). "An extrasolar planet that transits the disk of its parent star" (PDF). Nature. 421 (6922): 507–509. Bibcode:2003Natur.421..507K. doi:10.1038/nature01379. PMID 12556885. S2CID 1784939.
External links
- "Notes for star OGLE-TR-56". Extrasolar Planets Encyclopaedia. Archived from the original on November 6, 2007. Retrieved 2008-08-22.
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