Misplaced Pages

This is an old revision of this page, as edited by Artman40 (talk | contribs) at 00:51, 23 December 2013. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Template:Planetbox begin Template:Planetbox star Template:Planetbox character Template:Planetbox orbit Template:Planetbox discovery Template:Planetbox catalog Template:Planetbox end

Kepler-91b is a planet orbiting Kepler-91, star slightly more massive than the Sun. Kepler-91 has left the main sequence and is now a red giant branch star.

Discovery

Kepler-91b was detected by analyzing the data of Kepler spacecraft 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 low density of Kepler-91's shape is distorted to slightly ellipsoidal shape due to gravitational effects of the planet. Ellipsoidal light variations caused by Kepler-91b constitute more than the third of 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.

Characteristics

Kepler-91b is about 14% less massive than Jupiter while being more than 35% larger, making it less than half of the density of water. Kepler-91b orbits around the host star in about 6.25 days. Despite being one of the least edge-on orbits relative to Earth with inclination being about 68.5 degrees, transit was detected due to low semi-major axis to host star radius ratio.

Kepler-91b is expected to be engulfed by the parent star within about 55 million years.

References

1. Kepler-91b: a planet at the end of its life. Planet and giant host star properties via light-curve variations
2. Kepler-91b: a planet at the end of its life. Planet and giant host star properties via light-curve variations J. Lillo-Box, D. Barrado, A. Moya, B. Montesinos, J. Montalbán, A. Bayo, M. Barbieri, C. Régulo, L. Mancini, H. Bouy, T. Henning: 14 Dec 2013

External links

• Technology.org: Kepler-91b: a planet at the end of its life

v t e Exoplanets
Planet Definition IAU Planetary science
Main topics	Exoplanet Exoplanet orbital and physical parameters Methods of detecting exoplanets Planetary system Planet-hosting stars
Sizes and types	Terrestrial Carbon planet Coreless planet Desert planet Dwarf planet Hycean planet Ice planet Iron planet (Super-Mercury) Lava planet Ocean world Mega-Earth Sub-Earth Super-Earth Gaseous Eccentric Jupiter Mini-Neptune (Gas dwarf) Helium planet Hot Jupiter Hot Neptune Gas giant Ice giant Super-Jupiter Super-Neptune Super-puff Ultra-hot Jupiter Ultra-hot Neptune Other types Blanet Brown dwarf Chthonian planet Circumbinary planet Circumtriple planet Disrupted planet Double planet Ecumenopolis Eyeball planet Giant planet Mesoplanet Planemo Planet/Brown dwarf boundary Planetesimal Protoplanet Pulsar planet Sub-brown dwarf Sub-Neptune Toroidal planet Ultra-cool dwarf Ultra-short period planet (USP)
Formation and evolution	Accretion Accretion disk Asteroid belt Circumplanetary disk Circumstellar disc Circumstellar envelope Cosmic dust Debris disk Detached object Disrupted planet Excretion disk Exozodiacal dust Extraterrestrial materials Extraterrestrial sample curation Giant-impact hypothesis Gravitational collapse Hills cloud Internal structure Interplanetary dust cloud Interplanetary medium Interplanetary space Interstellar cloud Interstellar dust Interstellar medium Interstellar space Kuiper belt List of interstellar and circumstellar molecules Merging stars Molecular cloud Nebular hypothesis Oort cloud Outer space Planetary migration Planetary system Planetesimal Planet formation Protoplanetary disk Ring system Rubble pile Sample-return mission Scattered disc Star formation
Systems	Exocomet Interstellar Exomoon Tidally detached Rogue planet Orbits Retrograde Trojan Mean-motion resonances Titius–Bode law
Host stars	A B Binary star Brown dwarfs F/Yellow-white dwarfs G/Yellow dwarfs Herbig Ae/Be K/Orange dwarfs M/Red dwarfs Pulsar Red giant Subdwarf B Subgiant T Tauri White dwarfs Yellow giants
Detection	Astrometry Direct imaging list Microlensing list Polarimetry Timing list Radial velocity list Transit method list Transit-timing variation
Habitability	Astrobiology Astrooceanography Circumstellar habitable zone Earth analog Extraterrestrial liquid water Galactic habitable zone Habitability of binary star systems Habitability of F-type main-sequence star systems Habitability of K-type main-sequence star systems Habitability of natural satellites Habitability of neutron star systems Habitability of red dwarf systems Habitability of yellow dwarf systems Habitable zone for complex life List of potentially habitable exoplanets Tholin Superhabitable planet
Catalogues	Nearby Habitable Systems Exoplanet Data Explorer Extrasolar Planets Encyclopaedia NASA Exoplanet Archive NASA Star and Exoplanet Database Open Exoplanet Catalogue
Lists	Exoplanetary systems Host stars Multiplanetary systems Stars with proto-planetary discs Exoplanets Discoveries Extremes Firsts Nearest Largest Heaviest Terrestrial candidates Kepler 1–500 501–1000 1001–1500 1501–2000 K2 Potentially habitable Proper names Discovered exoplanets by year before 2000 2000–2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Other	Carl Sagan Institute Exoplanet naming convention Exoplanet phase curves Exoplanetary Circumstellar Environments and Disk Explorer Extragalactic planet Extrasolar planets in fiction Geodynamics of terrestrial exoplanets Neptunian desert Nexus for Exoplanet System Science Planets in globular clusters Small planet radius gap Sudarsky's gas giant classification
Discoveries of exoplanets Search projects

v t e 2013 in space
« 2012 2014 »
Space probe launches	Space probes LADEE (lunar orbiter; Sep 2013) Mars Orbiter Mission (Mars orbiter; Nov 2013) MAVEN (Mars orbiter; Nov 2013) Chang'e 3 / Yutu (mission to the Moon; Dec 2013) Space observatories IRIS (solar observation; Jun 2013) Hisaki (ultraviolet observation; Sep 2013) Gaia (astrometric observation; Dec 2013)
Impact events	Chelyabinsk meteor Chelyabinsk meteorite
Selected NEOs	Asteroid close approaches 2012 YQ1 367943 Duende 2013 EC 2013 ET (7888) 1993 UC (52760) 1998 ML14 (285263) 1998 QE2 (163364) 2002 OD20 (277475) 2005 WK4 2006 BL8 (471240) 2011 BT15 (511002) 2013 MZ5 2013 PJ10 2013 TV135 3361 Orpheus 2013 XY8 2013 YP139
Exoplanets	DENIS-P J082303.1−491201 b Gliese 504 b Gliese 667 e f g h? HD 95086 b HD 100546 b HD 106906 b blue color of HD 189733 b cloud map of Kepler-7b Kepler-37 b c d Kepler-61b Kepler-62 b c d e f Kepler-65 b c d Kepler-68 b c d Kepler-69 b c Kepler-78b exomoon candidate MOA-2011-BLG-262Lb PSO J318.5−22 (rogue planet) ROXs 42Bb
Discoveries	Luhman 16 GRB 130427A Hippocamp 1E 2259+586 anti-glitch M60-UCD1 z8_GND_5296 Hercules–Corona Borealis Great Wall Water vapor plumes of Europa
Novae	SN UDS10Wil SN 2013ej V339 Delphini SN 2013fs Nova Centauri 2013
Comets	C/2011 L4 (PANSTARRS) C/2012 F6 (Lemmon) C/2012 S4 (PANSTARRS) C/2013 A1 (Siding Spring) Comet ISON C/2013 R1 (Lovejoy) P/2013 P5 (PanSTARRS)
Space exploration	Herschel Space Observatory retirement (Jun 2013) Cassini–Huygens (The Day the Earth Smiled; Jul 2013) Voyager 1 (enters interstellar space; Sep 2013)
Outer space portal Category:2012 in outer space — Category:2013 in outer space — Category:2014 in outer space

This extrasolar-planet-related article is a stub. You can help Misplaced Pages by expanding it.

• v
• t
• e

• Exoplanets discovered in 2013
• Transiting exoplanets
• Exoplanets discovered by Kepler (spacecraft)
• Exoplanet stubs