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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]
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 SB*[1]
Distance 1800 ± 100 ly
(550 ± 30[2] pc)
Absolute magnitude (MV) 15.55
Mass 0.78 (± 0.02) M
Radius 0.77 (± 0.02) R
Metallicity 0.15 (± 0.10)[3]
Age > 0.7 billion years
Other designations
SBC9 2451
Database references
Extrasolar Planets

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,[2] 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.[4] 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.[5]

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

See also[edit]


External links[edit]

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