OGLE-TR-132
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| Observation data Epoch J2000.0 |
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|---|---|
| Constellation | Carina |
| Right ascension | 10h 50m 34.72s |
| Declination | -61° 57' 25.9" |
| Apparent magnitude (V) | 15.72 |
| Distance | ~5000 ly (~1500 pc) |
| Spectral type | F |
| Other designations | |
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none
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OGLE-TR-132 is a distant magnitude 15.72 star in the star fields of the constellation Carina. Because of its great distance, about 5000 light years, and location in the crowded field it was not notable in any way. Spectral type of the star is poorly known, but it seems to be a type F yellow-white dwarf star, slightly hotter and more luminous than the Sun.
However, in 2003 the Optical Gravitational Lensing Experiment (OGLE) detected periodic dimming in the star's light curve indicating a transiting, planetary-sized object. 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-132 b.
[edit] OGLE-TR-132b
| Orbital elements | ||
|---|---|---|
| Semi-major axis | (a) | 0.0306 ± 0.0008 AU |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 1.689857 ± 0.000006 d |
| Inclination | (i) | 85 ± 1° |
| Longitude of periastron |
(ω) | ?° |
| Time of periastron | (τ) | 2,453,142.5888 ± 0.00009 JD |
| Physical characteristics | ||
| Mass | 1.19 ± 0.13 MJ | |
| Radius | 1.13 ± 0.08 RJ | |
| Density | ? kg/m³ | |
| Temperature | ? K | |
| Discovery | ||
| Discovery date | 2003 | |
| Detection method(s) | Transit, Doppler Spectroscopy | |
| Discoverer(s) | Udalski, Pietrzyński, Szymański et al. |
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OGLE-TR-132b is an extrasolar planet orbiting star OGLE-TR-132.
In 2003 the Optical Gravitational Lensing Experiment (OGLE) detected periodic dimming in the star's light curve indicating a transiting, planetary-sized object. 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.
The planet has a mass 1.19 times that of Jupiter. Since the planet's inclination is known, the value is exact. It orbits the star (OGLE-TR-132) in an extremely close orbit, even closer than the famous planets 51 Pegasi b and HD 208459 b. The planet races around the star every 1 day 16.6 hours. Interestingly, radius of the planet is only 13% larger than Jupiter's, despite the heating effect by the star. Planets of its kind are sometimes called "super-hot Jupiters".
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