19h04m09s, +36° 37′57″| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra[1] |
| Right ascension | 19h04m 09.8516s[2] |
| Declination | +36° 37′ 57.447″[2] |
| Apparent magnitude (V) | +11.806[3] |
| Characteristics | |
| Spectral type | K0V[4] |
| Apparent magnitude (B) | 12.405±0.005[3] |
| Apparent magnitude (V) | 11.806[3] |
| Apparent magnitude (J) | 10.294±0.022[5] |
| Apparent magnitude (H) | 9.887±0.021[5] |
| Apparent magnitude (K) | 9.819±0.019[5] |
| Variable type | Planetary transit variable[4] |
| Astrometry | |
| Proper motion (μ) | RA: −32.168(12) mas/yr[2] Dec.: −20.463(13) mas/yr[2] |
| Parallax (π) | 6.2648 ± 0.0111 mas[2] |
| Distance | 520.6 ± 0.9 ly (159.6 ± 0.3 pc) |
| Absolute magnitude (MV) | +5.81[citation needed] |
| Details[citation needed] | |
| Mass | 0.87 ± 0.03 M☉ |
| Radius | 0.82 ±0.02 R☉ |
| Luminosity | 0.49 L☉ |
| Temperature | 5250 K |
| Metallicity | 0.001 ± 0.004 |
| Age | 2.5±1.4 Gyr |
| Other designations | |
TrES-1 Parent Star, V672 Lyr, TYC 2652-1324-1, 2MASS 19040985+3637574[6] | |
| Database references | |
| SIMBAD | data |
GSC 02652-01324 is an orange dwarf main sequence star approximately 521 light-years away in the constellationofLyra (the Lyre).[4][1][2]
In 2004 the extrasolar planet TrES-1b was found to be orbiting this star by the Trans-Atlantic Exoplanet Survey using the transit method. The planet was detected crossing its parent star using a small 4-inch-diameter (100 mm) telescope. The discovery was confirmed by the Keck Observatory using the radial velocity method, allowing its mass to be determined.[4][7]
Additional planets in the systems are suspected due to transit timing variations of TrES-1b.[8]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.697+0.028 −0.027 MJ |
0.03926+0.00058 −0.00060 |
3.0300689±0.0000007[8] | <0.012 | 90+0 −1.1° |
1.067+0.021 −0.022 RJ |
|
| |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||||
| Stars |
| ||||||||||||||
| Exoplanets |
| ||||||||||||||
| Star clusters |
| ||||||||||||||
| Nebulae |
| ||||||||||||||
| Galaxies |
| ||||||||||||||
 | This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |
