OGLE-TR-56

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OGLE-TR-56
OGLE-TR-56LightCurve.png
A light curve showing the May 14, 2008 planet transit across OGLE-TR-56. Adapted from Adams et al. (2011) [1]
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Sagittarius
Right ascension 17h 56m 35.51s [2]
Declination –29° 32′ 21.2″ [2]
Apparent magnitude  (V)16.560< [2]
Characteristics
Spectral type G [3]
Variable type EP [4]
Astrometry
Distance ~5,000  ly
(~1,500  pc)
Details
Mass 1.17 ± 0.04 [5]   M☉
Radius 1.32 ± 0.06 [5]   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. [2] 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. [6]

Contents

Planetary system

In 2002, a possible planet was discovered transiting the star, [6] and after additional observations to rule out false positives, it was confirmed. At the time of discovery it was the shortest-period planet. [7] [8]

The OGLE-TR-56 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 1.29 ± 0.12 [5]   MJ 0.0225 ± 0.0004 [3] 1.211909 ± 0.000001 [5] 0——

See also

References

  1. ↑ Adams, E. R.; López-Morales, M.; Elliot, J. L.; Seager, S.; Osip, D. J.; Holman, M. J.; Winn, J. N.; Hoyer, S.; Rojo, P. (November 2011). "Twenty-one New Light Curves of OGLE-TR-56b: New System Parameters and Limits on Timing Variations". The Astrophysical Journal. 741 (2): 102–113. Bibcode:2011ApJ...741..102A. doi:10.1088/0004-637X/741/2/102 . Retrieved 11 April 2025.
  2. 1 2 3 4 "SIMBAD query result: V* V5157 Sgr -- Star showing eclipses by its planet". Centre de Données astronomiques de Strasbourg . Retrieved 2009-04-30.
  3. 1 2 Planet : OGLE-TR-56 b, Extrasolar Planets Encyclopaedia. Accessed on line August 22, 2008.
  4. ↑ "General Catalogue of Variable Stars Query results". Sternberg Astronomical Institute, Moscow, Russia. Sternberg Astronomical Institute . Retrieved 2009-04-30.
  5. 1 2 3 4 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.
  6. 1 2 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.
  7. ↑ 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.
  8. ↑ 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.


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