| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Sagittarius |
| Right ascension | 17h 56m 35.51s[1] |
| Declination | –29° 32′ 21.2″[1] |
| Apparent magnitude (V) | 16.560<[1] |
| Characteristics | |
| Spectral type | G[2] |
| Variable type | EP[3] |
| Astrometry | |
| Distance | ~5,000 ly (~1,500 pc) |
| Details | |
| Mass | 1.17 ± 0.04[4] M☉ |
| Radius | 1.32 ± 0.06[4] R☉ |
| Other designations | |
|
V5157 Sagittarii, SBC9 2452
|
|
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia |
data |
OGLE-TR-56 is a dim, distant, magnitude 17 Sun-like star located approximately 1500 parsecs away in the constellation of Sagittarius.[1] This star is listed as a eclipsing type variable star with the eclipse due to the passage of the planet as noted in the discovery papers.[5]
Contents |
Planetary system
In 2002, the extrasolar planet OGLE-TR-56b was discovered transiting the star.[5] At that time, it was the shortest period planet discovered.[6]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b | 1.29 ± 0.12[4] MJ | 0.0225 ± 0.0004[2] | 1.211909 ± 0.000001[4] | 0 |
See also
References
- ^ a b c d "SIMBAD query result: V* V5157 Sgr -- Star showing eclipses by its planet". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=OGLE-TR-56. Retrieved 2009-04-30.
- ^ a b 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. http://www.sai.msu.su/groups/cluster/gcvs/cgi-bin/search.cgi?search=+V5157+Sgr+. Retrieved 2009-04-30.
- ^ a b c d The "666" collaboration on OGLE transits. I. Accurate radius of the planets OGLE-TR-10b and OGLE-TR-56b with VLT deconvolution photometry, F. Pont et al., Astronomy and Astrophysics 465, #3 (April 2007), pp. 1069–1074, Bibcode: 2007A&A...465.1069P, doi:10.1051/0004-6361:20066645.
- ^ a b Udalski 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: 115–128. http://acta.astrouw.edu.pl/Vol52/n2/a_52_2_1.html.
- ^ Konacki 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: 1076–1091. doi:. http://www.iop.org/EJ/article/0004-637X/597/2/1076/58497.html.
External links
- Konacki et al. (2003). "An extrasolar planet that transits the disk of its parent star". Nature 421: 507–509. doi:. http://www.nature.com/nature/journal/v421/n6922/abs/nature01379.html.(web Preprint)
- "Notes for star OGLE-TR-56". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/star.php?st=OGLE-TR-56. Retrieved 2008-08-22.
- "OGLE-TR-56". Extrasolar Visions. http://www.extrasolar.net/planettour.asp?StarCatId=normal&StarId=200. Retrieved 2008-08-22.
Coordinates: 
17h 56m 35.51s, −29° 32′ 21.2″
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