GSC 03549-02811
GSC 03549-02811 (sometimes referred to as Kepler-1, or either TrES-2A or TrES-2 parent star in reference to its exoplanet TrES-2b) is a yellow main-sequence star similar to the Sun. This star is located approximately 704 light-years away in the constellation of Draco. The apparent magnitude of this star is 11.41, which means it is not visible to the naked eye but can be seen with a medium-sized amateur telescope on a clear dark night. The age of this star is about 5 billion years.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Draco |
| A | |
| Right ascension | 19h 07m 14.0376s |
| Declination | +49° 18′ 59.091″ |
| Apparent magnitude (V) | 11.41 |
| B | |
| Right ascension | ~19h 07m 14s |
| Declination | ~+49° 18′ 59″ |
| Characteristics | |
| A | |
| Spectral type | G0V |
| Apparent magnitude (B) | ~12.030 |
| Apparent magnitude (V) | 11.411±0.005 |
| Apparent magnitude (I) | 11.07 |
| Apparent magnitude (Z) | 11.04 |
| Apparent magnitude (J) | 10.232±0.020 |
| Apparent magnitude (H) | 9.920±0.026 |
| Apparent magnitude (K) | 9.846±0.022 |
| Variable type | Planetary transit |
| B | |
| Spectral type | K |
| Apparent magnitude (I) | 14.73 |
| Apparent magnitude (Z) | 14.47 |
| Astrometry | |
| Proper motion (μ) | RA: 5.434(15) mas/yr Dec.: 1.572(16) mas/yr |
| Parallax (π) | 4.6308 ± 0.0116 mas |
| Distance | 704 ± 2 ly (215.9 ± 0.5 pc) |
| Details | |
| A | |
| Mass | 1.05 M☉ |
| Radius | 1.000+0.036 −0.033 R☉ |
| Temperature | 5850±50 K |
| Metallicity | −0.15±0.1 |
| Age | 5.1+2.7 −2.3×109 years |
| B | |
| Mass | 0.67 M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
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