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 | |
| 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
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]
| 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
References
- 1 2 3 4 5 6 7 "SIMBAD query result: SBC9 2451 -- Spectroscopic binary". Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-30.
- ↑ 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.
- 1 2 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/0701345. Bibcode:2007ApJ...660..850D. doi:10.1086/512721.
- ↑ 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/0606758. Bibcode:2006A&A...458..997S. doi:10.1051/0004-6361:20065683.
- ↑ 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/0301210. Bibcode:2002AcA....52..317U.
- ↑ 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/0404264. Bibcode:2004A&A...421L..13B. doi:10.1051/0004-6361:20040170.
External links
Coordinates: 
10h 52m 24.40s, −61° 26′ 48.5″
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