Kepler-65

Kepler-65
Observation data; Epoch J2000 Equinox J2000
Constellation	Lyra
Right ascension	19h 14m 45.2920s
Declination	+41° 09′ 04.207″
Apparent magnitude (V)	11.018
Characteristics
Astrometry
Proper motion (μ)	RA: 0.970±0.056 mas/yr ; Dec.: −14.189±0.056 mas/yr
Parallax (π)	3.2638 ± 0.0289 mas
Distance	999 ± 9 ly ; (306 ± 3 pc)
Details
Mass	1.25 M☉
Radius	1.41 R☉
Temperature	6211 K
Metallicity [Fe/H]	+0.17 dex
Rotation	7.911±0.155 days
Other designations
	KOI-85, KIC 5866724, TYC 3125-976-1, GSC 03125-00976, 2MASS J19144528+4109042
Database references
SIMBAD	data
KIC	data

Kepler-65 is a star slightly more massive than the Sun and has at least three planets.

Planetary system

Three planets were announced in 2013. All three planets orbit very close to their star. Follow-up radial velocity measurements provided data too noisy to constrain the mass of planets.^[4] Follow-up transit-timing variation analysis helped to measure the mass of Kepler-65d which revealed that it has significantly lower density than Earth.^[5]

The Kepler-65 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	—	0.035	2.154910	—	79.07°	1.42 $R$ _🜨
c	<20 $M$ _🜨	0.068	5.859944	—	83.65°	2.58 $R$ _🜨
d	2 $M$ _🜨	0.084	8.131146	—	84.8°	1.52 $R$ _🜨

External links

References

^ ^a ^b ^c ^d ^e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia Data Release 2 Vizier catalog entry
^ McQuillan, A.; Mazeh, T.; Aigrain, S. (2013). "Stellar Rotation Periods of The Kepler objects of Interest: A Dearth of Close-In Planets Around Fast Rotators". The Astrophysical Journal Letters. 775 (1). L11. arXiv:1308.1845. Bibcode:2013ApJ...775L..11M. doi:10.1088/2041-8205/775/1/L11.
^ "Kepler-65". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 January 2017.
^ https://arxiv.org/abs/1302.3728
^ Hadden, Sam; Lithwick, Yoram (2014). "Densities and Eccentricities of 139Keplerplanets from Transit Time Variations". The Astrophysical Journal. 787: 80. arXiv:1310.7942. doi:10.1088/0004-637X/787/1/80.

[Gaia_DR2-1] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia Data Release 2 Vizier catalog entry

[McQuillan2013-2] McQuillan, A.; Mazeh, T.; Aigrain, S. (2013). "Stellar Rotation Periods of The Kepler objects of Interest: A Dearth of Close-In Planets Around Fast Rotators". The Astrophysical Journal Letters. 775 (1). L11. arXiv:1308.1845. Bibcode:2013ApJ...775L..11M. doi:10.1088/2041-8205/775/1/L11.

[Simbad-3] "Kepler-65". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 January 2017.

[4] ttps://arxiv.org/abs/1302.3728

[5] Hadden, Sam; Lithwick, Yoram (2014). "Densities and Eccentricities of 139Keplerplanets from Transit Time Variations". The Astrophysical Journal. 787: 80. arXiv:1310.7942. doi:10.1088/0004-637X/787/1/80.

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Observation data Epoch J2000 Equinox J2000
Constellation	Lyra
Right ascension	19^h 14^m 45.2920^s^[1]
Declination	+41° 09′ 04.207″^[1]
Apparent magnitude (V)	11.018
Characteristics
Astrometry

Proper motion (μ)	RA: 0.970±0.056^[1] mas/yr Dec.: −14.189±0.056^[1] mas/yr
Parallax (π)	3.2638 ± 0.0289 mas^[1]
Distance	999 ± 9 ly (306 ± 3 pc)

Details

Mass	1.25 `M`_☉
Radius	1.41 `R`_☉
Temperature	6211 K
Metallicity [Fe/H]	+0.17 dex
Rotation	7.911±0.155 days^[2]

Other designations
KOI-85, KIC 5866724, TYC 3125-976-1, GSC 03125-00976, 2MASS J19144528+4109042^[3]
Database references
SIMBAD	data
KIC	data