OGLE-TR-113

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OGLE-TR-113
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Carina
Right ascension 10h 52m 24.40s[1]
Declination –61° 26′ 48.5″[1]
Apparent magnitude (V) 16.08[1]
Characteristics
Spectral type K
Apparent magnitude (V) ~16.08[1]
Apparent magnitude (I) ~14.42[1]
Apparent magnitude (K) 13.0 ±0.1[1]
Variable type EP[2]
Astrometry
Distance 1800 ± 100 ly
(550 ± 30[3] pc)
Absolute magnitude (MV) 15.55
Details
Mass 0.78 (± 0.02) M
Radius 0.77 (± 0.02) R
Metallicity 0.15 (± 0.10)[4]
Age > 0.7 billion years
Other designations
V752 Carinae, SBC9 2451
Database references
SIMBAD data
Extrasolar Planets
Encyclopaedia
data

OGLE-TR-113 is a dim, distant magnitude 16 binary star in the star fields of the constellation Carina. Because of its distance of about 1800 light years,[3] and location in a crowded field it was not notable in any way. Spectral type of the star is type K dwarf star, slightly cooler and less luminous than the Sun.[1]

Planetary system[edit]

However, in 2002 the Optical Gravitational Lensing Experiment (OGLE) detected periodic dimming in the star's light curve indicating a transiting, planetary-sized object.[5] Since low-mass red dwarfs and brown dwarfs may mimic a planet radial velocity measurements were necessary to calculate the mass of the body. In 2004 the object was proved to be a new transiting extrasolar planet, OGLE-TR-113b.[6]

The OGLE-TR-113 planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b 1.32 ± 0.19 MJ 0.0229 ± 0.0002 1.4324757 ± 0.0000013 0

See also[edit]

References[edit]

  1. ^ a b c d e f g "SIMBAD query result: SBC9 2451 -- Spectroscopic binary". Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-30. 
  2. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S. 
  3. ^ a b Díaz, Rodrigo F.; et al. (2007). "Millimagnitude Photometry for Transiting Extrasolar Planetary Candidates. II. Transits of OGLE-TR-113-b in the Optical and Near-IR". The Astrophysical Journal. 660 (1): 850–857. arXiv:astro-ph/0701345free to read. Bibcode:2007ApJ...660..850D. doi:10.1086/512721. 
  4. ^ Santos, N. C.; et al. (2006). "Chemical abundances for the transiting planet host stars OGLE-TR-10, 56, 111, 113, 132, and TrES-1". Astronomy and Astrophysics. 458 (3): 997–1005. arXiv:astro-ph/0606758free to read. Bibcode:2006A&A...458..997S. doi:10.1051/0004-6361:20065683. 
  5. ^ Udalski, A.; et al. (2002). "The Optical Gravitational Lensing Experiment. Planetary and Low-Luminosity Object Transits in the Carina Fields of the Galactic Disk". Acta Astronomica. 52 (4): 317–359. arXiv:astro-ph/0301210free to read. Bibcode:2002AcA....52..317U. 
  6. ^ Bouchy, F.; et al. (2004). "Two new "very hot Jupiters" among the OGLE transiting candidates". Astronomy and Astrophysics. 421 (1): L13–L16. arXiv:astro-ph/0404264free to read. Bibcode:2004A&A...421L..13B. doi:10.1051/0004-6361:20040170. 

External links[edit]

Coordinates: Sky map 10h 52m 24.40s, −61° 26′ 48.5″