OGLE-TR-10b
17h 51m 28.25s, −29° 52′ 34.9″ Size comparison of OGLE-TR-10b with Jupiter. | |
| Discovery | |
|---|---|
| Discovered by | Konacki et al. |
| Discovery site | Las Campanas Observatory in Chile |
| Discovery date | Dec 20, 2002 |
| Transit | |
| Orbital characteristics | |
| 0.04162 ± 0.00004 AU (6,226,300 ± 6,000 km) | |
| 3.10129 ± 0.00001 d | |
| Inclination | 84.5 ± 0.6 |
| Semi-amplitude | 100 ± 43 |
| Star | OGLE-TR-10 |
| Physical characteristics | |
Mean radius | 1.26 ± 0.07 RJ |
| Mass | 0.63 ± 0.14 MJ |
Mean density | 420 kg/m3 (710 lb/cu yd) |
| 0.94 g | |
OGLE-TR-10b is an
The planet was first detected by the
The planet is a typical "hot Jupiter", a planet with a mass half that of Jupiter and orbital distance only 1/24 that of Earth from the Sun. One revolution around the star takes a little over three days to complete. The planet is slightly larger than Jupiter, probably due to the heat from the star.
OGLE-TR-10 was identified as a promising candidate by the OGLE team during their 2001 campaign in three fields towards the Galactic Center.[2] The possible planetary nature of its companion was based on spectroscopic follow-up.[1] A reported a tentative radial velocity semi-amplitude (from Keck-I/HIRES) of 100±43 m/s, and a mass for the putative planet of 0.7 ± 0.3 MJup was confirmed in 2004 with the UVES/FLAMES radial velocities. However, the possibility of a blend could not be ruled out.[3]
A blend scenario as an alternative explanation from an analysis combining all available radial velocity measurements with the OGLE light curve. OGLE-TR-10b has a mass of 0.57 ± 0.12 MJup and a radius of 1.24 ± 0.09 RJup. These parameters bear close resemblance to those of the first known transiting extrasolar planet, HD 209458 b.[4]
The planets with the longer periods in the hot Jupiter class all have small masses (~0.7 MJup), while all the short-period planets (i.e., very hot Jupiters) have masses roughly twice as large. This trend may be related to the survival of planets in proximity to their parent stars.[5]
References
- ^ S2CID 250894455.
- Bibcode:2002AcA....52....1U.
- S2CID 18422673.
- S2CID 115760695.
- S2CID 9849951.
External links
Media related to OGLE-TR-10b at Wikimedia Commons
- OGLE transit data
- Geneva Observatory data Archived 2005-04-04 at the Wayback Machine