Kepler-65

Kepler-65
Observation data; Epoch J2000 Equinox J2000
Constellation	Lyra
Right ascension	19h 14m 45.2910s
Declination	+41° 09′ 04.089″
Apparent magnitude (V)	11.018
Characteristics
Astrometry
Proper motion (μ)	RA: 0.7 mas/yr ; Dec.: -14.6 mas/yr
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 Hog, E. (1998). "The Tycho Reference Catalogue". Astronomy and Astrophysics. 335. Bibcode:1998A&A...335L..65H.
^ ^a ^b "Kepler-65". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 January 2017.
^ 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.
^ Asteroseismic determination of obliquities of the exoplanet systems Kepler-50 and Kepler-65: W. J. Chaplin, R. Sanchis-Ojeda, T. L. Campante, R. Handberg, D. Stello, J. N. Winn, S. Basu, J. Christensen-Dalsgaard, G. R. Davies, T. S. Metcalfe, L. A. Buchhave, D. A. Fischer, T. R. Bedding, W. D. Cochran, Y. Elsworth, R. L. Gilliland, S. Hekker, D. Huber, H. Isaacson, C. Karoff, S. D. Kawaler, H. Kjeldsen, D. W. Latham, M. N. Lund, M. Lundkvist, G. W. Marcy, A. Miglio, T. Barclay, J. J. Lissauer
^ https://arxiv.org/abs/1310.7942

[TRC-1] Hog, E. (1998). "The Tycho Reference Catalogue". Astronomy and Astrophysics. 335. Bibcode:1998A&A...335L..65H.

[simbad-2] "Kepler-65". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 January 2017.

[McQuillan2013-3] 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.

[4] Asteroseismic determination of obliquities of the exoplanet systems Kepler-50 and Kepler-65: W. J. Chaplin, R. Sanchis-Ojeda, T. L. Campante, R. Handberg, D. Stello, J. N. Winn, S. Basu, J. Christensen-Dalsgaard, G. R. Davies, T. S. Metcalfe, L. A. Buchhave, D. A. Fischer, T. R. Bedding, W. D. Cochran, Y. Elsworth, R. L. Gilliland, S. Hekker, D. Huber, H. Isaacson, C. Karoff, S. D. Kawaler, H. Kjeldsen, D. W. Latham, M. N. Lund, M. Lundkvist, G. W. Marcy, A. Miglio, T. Barclay, J. J. Lissauer

[5] ttps://arxiv.org/abs/1310.7942

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