Kepler-88
Kepler-88 is a Sun-like star in the constellation of Lyra, with three confirmed planets. In April 2012, scientists discovered that a Kepler candidate known as KOI-142.01 (Kepler-88b) exhibited very significant transit-timing variations caused by a non-transiting planet. Timing variations were large enough to cause changes to transit durations to Kepler-88b as well. Large transit-timing variations helped to put tight constraints to masses of both planets. The non-transiting planet was further confirmed through the radial velocity method in November 2013.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra |
| Right ascension | +19h 24m 35.5431s |
| Declination | +40° 40′ 09.8098″ |
| Apparent magnitude (V) | 13.5 |
| Characteristics | |
| Spectral type | G8IV or B |
| Astrometry | |
| Proper motion (μ) | RA: 1.114±0.023 mas/yr Dec.: 4.963±0.028 mas/yr |
| Parallax (π) | 2.6246 ± 0.0140 mas |
| Distance | 1,243 ± 7 ly (381 ± 2 pc) |
| Absolute magnitude (MV) | 5.183+0.116 −0.090 |
| Details | |
| Mass | 1.022+0.023 −0.026 M☉ |
| Radius | 0.961+0.020 −0.024 R☉ |
| Luminosity | 0.755+0.056 −0.067 L☉ |
| Surface gravity (log g) | 4.482+0.018 −0.016 cgs |
| Temperature | 5513±67 K |
| Metallicity [Fe/H] | +0.37 ± 0.08 dex |
| Rotation | 30.689±0.383 days |
| Age | 2.45+1.20 −0.77 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
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