Draft:Kepler-1972

Kepler-1972
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Lyra
Right ascension	19h 13m 34.8691s
Declination	19° 11′ 54.011″
Characteristics
Astrometry
Proper motion (μ)	RA: −3.723 mas/yr ; Dec.: −13.766 mas/yr
Details
Mass	1.18 M☉
Radius	1.12 R☉
Temperature	5,818 K
Rotation	11.12 days
Rotational velocity (v sin i)	5.04 km/s
Age	~5 Gyr
Other designations
	KOI-3184
Database references
SIMBAD	data

Kepler-1972 or KOI-3184 is a G-type main sequence Sun-like star located 923 light years away from Earth in the constellation of Lyra.

Characteristics

Mass, gravity and radius

Its solar mass is 1.18, the solar radius is 1.12 and its gravity is roughly 4.46 cgs^{[clarification needed]}.

Temperature

Its spectral class is classified as G1V, it would be assumed for its temperature is 5,818 Kelvin.^[1]

Planetary system

Kepler-1972 has 2 exoplanets orbiting it. These planets are suspected since 2022, for their same mass and radius and their temperature is higher due to their being closest to its host star. The discovery by A. Leleu with transmit method.^[1]

The Kepler-1972 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	0.0064±0.0019 $M$ _J	—	7.54425±0.00054	0	—	0.072±0.004 $R$ _J
c	0.0066±0.0020 $M$ _J	—	11.3295±0.0011	0	—	0.078±0.005 $R$ _J

References

^ ^a ^b Leleu, A.; Delisle, J. -B.; Mardling, R.; Udry, S.; Chatel, G.; Alibert, Y.; Eggenberger, P. (2022). "Alleviating the transit timing variation bias in transit surveys. II. RIVERS: Twin resonant Earth-sized planets around Kepler-1972 recovered from a Kepler false positive". Astronomy and Astrophysics. 661: A141. arXiv:2201.11459. Bibcode:2022A&A...661A.141L. doi:10.1051/0004-6361/202142822.

Category:Planetary systems with one confirmed planet Category:G-type main-sequence stars 110113 061820 Category:Durchmusterung objects Category:Lyra 0755

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[leleu2022-1] Leleu, A.; Delisle, J. -B.; Mardling, R.; Udry, S.; Chatel, G.; Alibert, Y.; Eggenberger, P. (2022). "Alleviating the transit timing variation bias in transit surveys. II. RIVERS: Twin resonant Earth-sized planets around Kepler-1972 recovered from a Kepler false positive". Astronomy and Astrophysics. 661: A141. arXiv:2201.11459. Bibcode:2022A&A...661A.141L. doi:10.1051/0004-6361/202142822.

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