Kepler-91b
Sign in to saveKepler-91b is a giant planet orbiting Kepler-91, a star slightly more massive than the Sun. Kepler-91 has left the main sequence and is now a red giant branch star.
Astronomical data · SIMBAD
- Object type
- Pl
- Distance
- 4,127 light-years
- Coordinates
- RA 285.6729° · Dec 44.1167°
via SIMBAD · CDS Strasbourg
Wikidata facts
- Constellation
- Lyra
- Diameter
- 163000
- Radius
- 1.367
- Mass
- 0.88
- Orbital period
- 6.24658
Show 15 more facts
- time of discovery or invention
- 2014-02-00
- discoverer or inventor
- Kepler Space Telescope
- right ascension
- 285.67290795524630
- declination
- 44.11673327562223
- epoch
- J2000.0
- argument of periapsis
- 316.8
- discovery method
- transit method
- orbital eccentricity
- 0.018
- catalog code
- TIC 352011875b
- temperature
- 2040.0
- semi-major axis of an orbit
- 0.0731
- orbital inclination
- 69.68
- right ascension component of proper motion
- -0.774
- declination component of proper motion
- 4.190
- parallax
- 0.7437
via Wikidata · CC0
~2 min read
Encyclopedic overview
5 sectionsContents
- Discovery and further confirmation
- Characteristics
- Possible trojan companion
- References
- External links
Kepler-91b is a giant planet orbiting Kepler-91, a star slightly more massive than the Sun. Kepler-91 has left the main sequence and is now a red giant branch star.
==Discovery and further confirmation== Kepler-91b was detected by analyzing the data of Kepler space telescope where a transit-like signal was found. Initially thought to be a false positive due to light curve variations by a self-luminous object, it was later revealed that due to Kepler-91's low density, its shape is distorted to a slightly ellipsoidal shape due to gravitational effects of the planet. Ellipsoidal light variations caused by Kepler-91b constitute more than the third of the light variations compared to transit depth. Ellipsoidal light variations also allowed to determine the planet's mass. It was also found that Kepler-91b reflects some of the starlight from its star.
Excerpted from Wikipedia’s “Kepler-91b” article, available under the CC BY-SA 4.0 licence.