Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cygnus [1] |
Right ascension | 19h 28m 56.81962s [2] |
Declination | +41° 05′ 09.1405″ [2] |
Apparent magnitude (V) | 15.855 [3] |
Characteristics | |
Spectral type | G5 [4] |
Astrometry | |
Proper motion (μ) |
RA: 2.171±0.033
mas/
yr
[2] Dec.: −0.324±0.031 mas/ yr [2] |
Parallax (π) | 0.9298 ± 0.0281 mas [2] |
Distance | 3,500 ± 100
ly (1,080 ± 30 pc) |
Details | |
Mass | 0.9+0.03 −0.10 [5] M☉ |
Luminosity | 0.59 [3] L☉ |
Temperature | 5400 [3] K |
Metallicity [Fe/H] | 0.41 [3] dex |
Rotational velocity (v sin i) | 0.6 [3] km/s |
Other designations | |
Database references | |
SIMBAD | data |
KIC | data |
Kepler-27 is a star in the northern constellation of Cygnus, the swan. It is located at the celestial coordinates: Right Ascension 19h 28m 56.81962s, Declination +41° 05′ 09.1405″. [2] With an apparent visual magnitude of 15.855, [3] this star is too faint to be seen with the naked eye.
The planetary system of Kepler-27 comprising two small gas giants on eccentric orbits [5] was discovered in late 2011. [6] The planets Kepler-27b and Kepler-27c have equilibrium temperatures of 610 K and 481 K, respectively. [7] In 2021, a third, sub-Neptune-sized planet was confirmed, orbiting closer in than the other two planets. [8] [9]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
d | — | — | 6.54629 | — | — | 0.2414 RJ |
b | 0.1320±0.018 MJ | 0.118 | 15.3348 | — | — | 0.522±0.024 RJ |
c | 0.0670±0.011 MJ | 0.191 | 31.3309 | — | — | 0.640±0.029 RJ |
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cygnus [1] |
Right ascension | 19h 28m 56.81962s [2] |
Declination | +41° 05′ 09.1405″ [2] |
Apparent magnitude (V) | 15.855 [3] |
Characteristics | |
Spectral type | G5 [4] |
Astrometry | |
Proper motion (μ) |
RA: 2.171±0.033
mas/
yr
[2] Dec.: −0.324±0.031 mas/ yr [2] |
Parallax (π) | 0.9298 ± 0.0281 mas [2] |
Distance | 3,500 ± 100
ly (1,080 ± 30 pc) |
Details | |
Mass | 0.9+0.03 −0.10 [5] M☉ |
Luminosity | 0.59 [3] L☉ |
Temperature | 5400 [3] K |
Metallicity [Fe/H] | 0.41 [3] dex |
Rotational velocity (v sin i) | 0.6 [3] km/s |
Other designations | |
Database references | |
SIMBAD | data |
KIC | data |
Kepler-27 is a star in the northern constellation of Cygnus, the swan. It is located at the celestial coordinates: Right Ascension 19h 28m 56.81962s, Declination +41° 05′ 09.1405″. [2] With an apparent visual magnitude of 15.855, [3] this star is too faint to be seen with the naked eye.
The planetary system of Kepler-27 comprising two small gas giants on eccentric orbits [5] was discovered in late 2011. [6] The planets Kepler-27b and Kepler-27c have equilibrium temperatures of 610 K and 481 K, respectively. [7] In 2021, a third, sub-Neptune-sized planet was confirmed, orbiting closer in than the other two planets. [8] [9]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
d | — | — | 6.54629 | — | — | 0.2414 RJ |
b | 0.1320±0.018 MJ | 0.118 | 15.3348 | — | — | 0.522±0.024 RJ |
c | 0.0670±0.011 MJ | 0.191 | 31.3309 | — | — | 0.640±0.029 RJ |