Kepler-27: Difference between revisions

Kepler-31
Observation data; Epoch J2000 Equinox J2000
Constellation	Cygnus
Right ascension	19h 28m 56.825s
Declination	+41° 05′ 09.15″
Apparent magnitude (V)	15.855
Characteristics
Spectral type	G5
Astrometry
Distance	2638 ly ; (809 pc)
Details
Mass	0.65 M☉
Radius	R☉
Luminosity	0.59 L☉
Temperature	5400 K
Metallicity [Fe/H]	0.41 dex
Rotational velocity (v sin i)	0.6 km/s
Other designations
	KOI-935, KIC 9347899, 2MASS J19360552+4551110
Database references
SIMBAD	data
KIC	data

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Revision as of 16:26, 4 May 2017

Kepler-2 is a star in the northern constellation of Cygnus, the swan, that is orbited by a planet found to be unequivocally within the star's habitable zone. It is located at the celestial coordinates: Right Ascension 19^h 28^m 56.825^s, Declination +41° 05′ 09.15″.^[4] With an apparent visual magnitude of 15.855,^[2] this star is too faint to be seen with the naked eye.

The Kepler-27 planetary system^[3]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	9.11 $M$ _J	0.118	15.3348	—	—	—
c	13.8 $M$ _J	0.191	31.3309	—	—	4.1 $R$ _🜨

References

^ "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
^ ^a ^b ^c ^d ^e ^f ^g ^h Kepler-31b, NASA Ames Research Center, retrieved 2011-12-06
^ ^a ^b ^c Schneider, Jean, "Star: Kepler-31", Extrasolar Planets Encyclopaedia, Paris Observatory, archived from the original on 2012-04-26, retrieved 2011-12-06 {{citation}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
^ "Kepler Discoveries". 2011-12-05.

[IAU_const-1] "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15

[nasa_ames-2] ^ ^a ^b ^c ^d ^e ^f ^g ^h Kepler-31b, NASA Ames Research Center, retrieved 2011-12-06

[epe-3] Schneider, Jean, "Star: Kepler-31", Extrasolar Planets Encyclopaedia, Paris Observatory, archived from the original on 2012-04-26, retrieved 2011-12-06 {{citation}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[keplerdiscoveries-4] "Kepler Discoveries". 2011-12-05.

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[3]

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@@ Line 22: / Line 22: @@
 {{Starbox character
 | class = G5<ref name=epe>{{citation
- | first1=Jean | last1=Schneider
+ |first1=Jean
+ |last1=Schneider
- | title=Star: Kepler-31
+ |title=Star: Kepler-31
- | work=[[Extrasolar Planets Encyclopaedia]] | publisher=Paris Observatory
+ |work=[[Extrasolar Planets Encyclopaedia]]
+ |publisher=Paris Observatory
- | url=http://exoplanet.eu/star.php?st=Kepler-31
+ |url=http://exoplanet.eu/star.php?st=Kepler-31
+ |accessdate=2011-12-06
- | accessdate=2011-12-06 }}</ref><!-- NOTE: Please don't add a 'V' here until it is established as such by a reliable source. -->
+ |deadurl=yes
+ |archiveurl=https://web.archive.org/web/20120426071816/http://exoplanet.eu/star.php?st=Kepler-31
+ |archivedate=2012-04-26
+ |df=
+}}</ref><!-- NOTE: Please don't add a 'V' here until it is established as such by a reliable source. -->
 | appmag_1_passband =  <!-- Passband for first apparent magnitude (e.g., H, J, K, etc.) -->
 | appmag_1 = <!-- Value of first apparent magnitude  -->

Observation data Epoch J2000 Equinox J2000
Constellation	Cygnus^[1]
Right ascension	19^h 28^m 56.825^s
Declination	+41° 05′ 09.15″
Apparent magnitude (V)	15.855^[2]
Characteristics
Spectral type	G5^[3]
Astrometry

Distance	2638^[3] ly (809 pc)

Details

Mass	0.65^[2] `M`_☉
Radius	^[2] `R`_☉
Luminosity	0.59^[2] `L`_☉
Temperature	5400^[2] K
Metallicity [Fe/H]	0.41^[2] dex
Rotational velocity (v sin i)	0.6^[2] km/s

Other designations
KOI-935, KIC 9347899, 2MASS J19360552+4551110
Database references
SIMBAD	data
KIC	data