TrES-1b
Size comparison of TrES-1 with Jupiter. | |
| Discovery | |
|---|---|
| Discovered by | TrES |
| Discovery site | Teide Observatory, Lowell Observatory, Palomar Observatory |
| Discovery date | 24 August 2004 |
| Transit | |
| Orbital characteristics | |
| 0.03926+0.00058 −0.00060 AU | |
| Eccentricity | <0.012 |
| 3.03006973±0.00000018 d | |
| Inclination | 88.2 ± 1 |
| Semi-amplitude | 106.7+2.9 −2.8 |
| Star | GSC 02652-01324 |
| Physical characteristics | |
| 1.081+0.18−0.04 RJ | |
| Mass | 0.697+0.028 −0.027 MJ |
Mean density | 0.642 g/cm3 |
| 0.52 g | |
| Temperature | 1,060 ± 50 |
TrES-1b is an extrasolar planet approximately 523 light-years away in the constellation of Lyra (the Lyre). The planet's mass and radius indicate that it is a Jovian planet with a similar bulk composition to Jupiter. Unlike Jupiter, but similar to many other planets detected around other stars, TrES-1 is located very close to its star, and belongs to the class of planets known as hot Jupiters. The planet was discovered orbiting around GSC 02652-01324 (an orange dwarf star).