Kepler-65

Kepler-65
Observation data; Epoch J2000 Equinox ICRS
Constellation	Lyra
Right ascension	19h 14m 45.2916s
Declination	+41° 09′ 04.210″
Apparent magnitude (V)	11.018[citation needed]
Characteristics
Evolutionary stage	main sequence
Spectral type	F6IV[citation needed]
Astrometry
Proper motion (μ)	RA: 1.256(14) mas/yr ; Dec.: −14.388(12) mas/yr
Parallax (π)	3.3184±0.0108 mas
Distance	983 ± 3 ly ; (301.4 ± 1.0 pc)
Details
Mass	1.25[citation needed] M☉
Radius	1.41[citation needed] R☉
Temperature	6211[citation needed] K
Metallicity [Fe/H]	+0.17[citation needed] 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
Exoplanet Archive	data
KIC	data

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

Planetary system

Three transiting planets were announced in 2013. A fourth non-transiting planet was discovered using radial velocity measurements in 2019.^[5] The first three planets orbit very close to their star. Initial follow-up radial velocity measurements provided data too noisy to constrain the mass of planets.^[6] Follow-up transit-timing variation analysis helped to measure the mass of Kepler-65d which revealed that it has significantly lower density than Earth.^[7]

Size comparison of the three planets of Kepler 65 with a known radius (*artistic concept*) with Earth

The Kepler-65 planetary system^[5]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination (°)	Radius
b	2.4+2.4 −1.6 `M`_🜨	0.035	2.1549209+0.0000086 −0.0000074	0.028+0.031 −0.02	92.2+1.3 −1.4	1.444+0.037 −0.031 `R`_🜨
c	5.4±1.7 `M`_🜨	0.068	5.859697+0.000093 −0.000099	0.02+0.022 −0.013	92.33+0.29 −0.26	2.623+0.066 −0.056 `R`_🜨
d	4.14+0.79 −0.80 `M`_🜨	0.084	8.13167+0.00024 −0.00021	0.014+0.016 −0.010	92.35+0.18 −0.16	1.587+0.040 −0.035 `R`_🜨
e	200+200 −50 `M`_🜨	—	258.8+1.5 −1.3	0.283+0.064 −0.071	127.0+27.0 −25.0	—

External links

References

↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
↑ 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.
1 2 Mills, Sean M.; et al. (2019). "Long-period Giant Companions to Three Compact, Multiplanet Systems". The Astronomical Journal. 157 (4). 145. arXiv:1903.07186. Bibcode:2019AJ....157..145M. doi:10.3847/1538-3881/ab0899. S2CID 119197547.
↑ Chaplin, W. J.; et al. (2013). "Asteroseismic Determination of Obliquities of the Exoplanet Systems Kepler-50 and Kepler-65". The Astrophysical Journal. 766 (2). 101. arXiv:1302.3728. Bibcode:2013ApJ...766..101C. doi:10.1088/0004-637X/766/2/101.
↑ Hadden, Sam; Lithwick, Yoram (2014). "Densities and Eccentricities of 139 Kepler Planets from Transit Time Variations". The Astrophysical Journal. 787 (1). 80. arXiv:1310.7942. Bibcode:2014ApJ...787...80H. doi:10.1088/0004-637X/787/1/80.

[Roman1987-1] Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.

[Gaia_DR3-2] 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[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.

[Simbad-4] "Kepler-65". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 January 2017.

[Mills2019-5] 1 2 Mills, Sean M.; et al. (2019). "Long-period Giant Companions to Three Compact, Multiplanet Systems". The Astronomical Journal. 157 (4). 145. arXiv:1903.07186. Bibcode:2019AJ....157..145M. doi:10.3847/1538-3881/ab0899. S2CID 119197547.

[Chaplin2013-6] Chaplin, W. J.; et al. (2013). "Asteroseismic Determination of Obliquities of the Exoplanet Systems Kepler-50 and Kepler-65". The Astrophysical Journal. 766 (2). 101. arXiv:1302.3728. Bibcode:2013ApJ...766..101C. doi:10.1088/0004-637X/766/2/101.

[Hadden2014-7] Hadden, Sam; Lithwick, Yoram (2014). "Densities and Eccentricities of 139 Kepler Planets from Transit Time Variations". The Astrophysical Journal. 787 (1). 80. arXiv:1310.7942. Bibcode:2014ApJ...787...80H. doi:10.1088/0004-637X/787/1/80.

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Observation data Epoch J2000 Equinox ICRS
Constellation	Lyra^[1]
Right ascension	19^h 14^m 45.2916^s^[2]
Declination	+41° 09′ 04.210″^[2]
Apparent magnitude (V)	11.018^{[citation needed]}
Characteristics
Evolutionary stage	main sequence^[2]
Spectral type	F6IV^{[citation needed]}
Astrometry
Proper motion (μ)	RA: 1.256(14) mas/yr^[2] Dec.: −14.388(12) mas/yr^[2]
Parallax (π)	3.3184±0.0108 mas^[2]
Distance	983 ± 3 ly (301.4 ± 1.0 pc)
Details
Mass	1.25^{[citation needed]} `M`_☉
Radius	1.41^{[citation needed]} R_☉
Temperature	6211^{[citation needed]} K
Metallicity [Fe/H]	+0.17^{[citation needed]} dex
Rotation	7.911±0.155 days^[3]
Other designations
KOI-85, KIC 5866724, TYC 3125-976-1, GSC 03125-00976, 2MASS J19144528+4109042^[4]
Database references
SIMBAD	data
Exoplanet Archive	data
KIC	data

This page was redesigned at the edge.

Planetary system

External links

References