Kepler-48
Star in the constellation Cygnus
From Wikipedia, the free encyclopedia
Kepler-48, previously designated KOI-148, is a subgiant star in the constellation of Cygnus, about 1,000 light years away.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 56m 33.416s[2] |
| Declination | +40° 56′ 56.50″[2] |
| Apparent magnitude (V) | 13.174±0.103[3] |
| Characteristics | |
| Evolutionary stage | subgiant[2][4] |
| Spectral type | K0V[5] |
| Astrometry | |
| Radial velocity (Rv) | −13.34±2.12[2] km/s |
| Proper motion (μ) | RA: 13.215(12) mas/yr[2] Dec.: −20.410(15) mas/yr[2] |
| Parallax (π) | 3.2283±0.0116 mas[2] |
| Distance | 1,010 ± 4 ly (310 ± 1 pc) |
| Details | |
| Mass | 0.916[6] M☉ |
| Radius | 0.897[7] R☉ |
| Luminosity | 0.5137[8] L☉ |
| Surface gravity (log g) | 4.47363[7] cgs |
| Temperature | 5,160[7] K |
| Metallicity [Fe/H] | 0.2±0.1[8] dex |
| Rotational velocity (v sin i) | 0.5[9] km/s |
| Age | 3.14[9] Gyr |
| Other designations | |
| Kepler-48, KOI-148, KIC 5735762, 2MASS J19563341+4056564[10] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| KIC | data |
Planetary System
Kepler-48 has five confirmed exoplanets.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 6.8±2.9 M🜨 | 0.054 | 4.78 | — | — | 1.85±0.09 R🜨 |
| c | 11.1±3.2 M🜨 | 0.086 | 9.67 | — | — | 2.56±0.07 R🜨 |
| d | 9±6 M🜨 | 0.23 | 42.9 | — | — | 1.98±0.07 R🜨 |
| e | 2.16±0.07 MJ | 1.9 | 1001 | 0.003±0.028 | — | — |
| f | 0.93±0.29 MJ | 5.7 | 5205 | 0.01±0.15 | — | — |
