OGLE-TR-56 is the first star whose planet was discovered by the transit method.
| OGLE-TR-56 | |||
|---|---|---|---|
| Star | |||
| Observational data ( Age J2000.0 ) | |||
| Right ascension | |||
| Declination | |||
| Distance | 5,000 St. years (1,500 pc ) | ||
| Visible magnitude ( V ) | 16.6 | ||
| Constellation | Sagittarius | ||
| Specifications | |||
| Spectral class | G | ||
| physical characteristics | |||
| Weight | 0.87 M ☉ | ||
| Radius | 0.82 ± 0.05 R ☉ | ||
| Temperature | 5000 ± 150 K | ||
| |||
| Database Information | |||
| SIMBAD | |||
Planet b is a rare type of short-periodically hot jupiters (giant planets with a period of revolution of the order of 1 - 2 days). The radius and density of the planet are calculated from the depth of transit.
Star
Due to the large uncertainty in the distance estimate (~ 1500 ps ), the OGLE-TR-56 information is inaccurate. The star is a yellow dwarf of type G. Not visible to the naked eye (magnitude 16.6). Coordinates (2000): RA = 17 56 35.51 DEC = -29 32 21.2 ( Sagittarius constellation )
Planet b
The orbital period of OGLE-TR-56 is 1.212 days, the semimajor axis of the orbit is 0.0225 a. e. , eccentricity 0 (circular orbit). The mass is 1.45 Jupiter , the radius is 1.23 Jupiter , the density is ~ 1.0 g / cm³, the surface temperature is estimated at about 1,700 degrees.
| Planet | Weight ( M J ) | Radius ( R J ) | Circulation period ( days ) | Semimajor axis orbits ( a.u. ) | Eccentricity orbits |
|---|---|---|---|---|---|
| b | 1.45 | 1.23 | 1,212 | 0.0225 | 0 |
See also
- Exoplanet