Kepler-11
Kepler-11, also designated as 2MASS J19482762+4154328, is a Sun-like star slightly larger than the Sun in the constellation Cygnus, located some 2,150 light years from Earth. It is located within the field of vision of the Kepler spacecraft, the satellite that NASA's Kepler Mission uses to detect planets that may be transiting their stars. Announced on February 2, 2011, the star system is among the most compact and flattest systems yet discovered. It is the first discovered case of a star system with six transiting planets. All discovered planets are larger than Earth, with the larger ones being about Neptune's size.
Artist's conception of a simultaneous transit of three planets before Kepler-11 observed by NASA's Kepler spacecraft on Aug. 26, 2010. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 48m 27.6228s |
| Declination | +41° 54′ 32.903″ |
| Apparent magnitude (V) | 14.2 |
| Characteristics | |
| Spectral type | G6V |
| Astrometry | |
| Proper motion (μ) | RA: −0.038±0.025 mas/yr Dec.: −7.069±0.029 mas/yr |
| Parallax (π) | 1.5184 ± 0.0151 mas |
| Distance | 2,150 ± 20 ly (659 ± 7 pc) |
| Absolute magnitude (MV) | 4.7 |
| Details | |
| Mass | 1.042±0.005 M☉ |
| Radius | 1.021±0.025 R☉ |
| Surface gravity (log g) | 4.44±0.02 cgs |
| Temperature | 5836±7 K |
| Metallicity [Fe/H] | 0.062±0.007 dex |
| Rotational velocity (v sin i) | 2.2±0.2 km/s |
| Age | 3.2±0.9 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
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