Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cygnus |
Right ascension | 19h 49m 51.6736s [1] |
Declination | +42° 52′ 58.269″ [1] |
Characteristics | |
Evolutionary stage | main sequence star |
Variable type | planetary transit |
Astrometry | |
Proper motion (μ) |
RA: 4.815(14)
mas/
yr
[1] Dec.: −0.190(17) mas/ yr [1] |
Parallax (π) | 1.3763 ± 0.0129 mas [1] |
Distance | 2,370 ± 20
ly (727 ± 7 pc) |
Details | |
Mass | 1.1 [2] M☉ |
Radius | 1.0645 [2] R☉ |
Luminosity | 0.1125588 [2] L☉ |
Temperature | 5968.88±41.9175 [2] K |
Metallicity [Fe/H] | -0.0098325 ± 0.0399191 Fe [2] dex |
Age | 0.65±0.44 [2] Gyr |
Other designations | |
Kepler-289 (PH3) is a rotating variable star slightly more massive than the Sun, with an unknown spectral type, 2370 light-years away from Earth in the constellation of Cygnus. In 2014, three exoplanets were discovered orbiting it. [2]
Kepler-289 hosts four planets, three confirmed (Kepler-289b, [3] [4] [5] [6] Kepler-289c, [7] [3] [8] Kepler-289d [3] [9] [10]) and one unconfirmed candidate (Kepler-289e). The discovery of this system was made using the transit method. The inner three planets were found in 2014 with the Kepler space telescope and the Planet Hunters team, while planet e was discovered by follow-up studies in 2017.
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 0.04±0.002 MJ | 0.2 | 34.545 | 0 | — | — |
d | 0.01 MJ | 0.3 | 66.1 | 0 | — | — |
c | 0.4 MJ | 0.5 | 125.85 | 0 | — | — |
e (unconfirmed) | ? MJ | 1.58+0.69 −0.47 |
330.071558±0.006272 | 0 | — | — |
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cygnus |
Right ascension | 19h 49m 51.6736s [1] |
Declination | +42° 52′ 58.269″ [1] |
Characteristics | |
Evolutionary stage | main sequence star |
Variable type | planetary transit |
Astrometry | |
Proper motion (μ) |
RA: 4.815(14)
mas/
yr
[1] Dec.: −0.190(17) mas/ yr [1] |
Parallax (π) | 1.3763 ± 0.0129 mas [1] |
Distance | 2,370 ± 20
ly (727 ± 7 pc) |
Details | |
Mass | 1.1 [2] M☉ |
Radius | 1.0645 [2] R☉ |
Luminosity | 0.1125588 [2] L☉ |
Temperature | 5968.88±41.9175 [2] K |
Metallicity [Fe/H] | -0.0098325 ± 0.0399191 Fe [2] dex |
Age | 0.65±0.44 [2] Gyr |
Other designations | |
Kepler-289 (PH3) is a rotating variable star slightly more massive than the Sun, with an unknown spectral type, 2370 light-years away from Earth in the constellation of Cygnus. In 2014, three exoplanets were discovered orbiting it. [2]
Kepler-289 hosts four planets, three confirmed (Kepler-289b, [3] [4] [5] [6] Kepler-289c, [7] [3] [8] Kepler-289d [3] [9] [10]) and one unconfirmed candidate (Kepler-289e). The discovery of this system was made using the transit method. The inner three planets were found in 2014 with the Kepler space telescope and the Planet Hunters team, while planet e was discovered by follow-up studies in 2017.
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 0.04±0.002 MJ | 0.2 | 34.545 | 0 | — | — |
d | 0.01 MJ | 0.3 | 66.1 | 0 | — | — |
c | 0.4 MJ | 0.5 | 125.85 | 0 | — | — |
e (unconfirmed) | ? MJ | 1.58+0.69 −0.47 |
330.071558±0.006272 | 0 | — | — |