Kepler-296 - Misplaced Pages

(Redirected from Kepler-296d) Star in the constellation Draco

Kepler-296
Observation data Epoch J2000 Equinox J2000
Constellation	Draco
Right ascension	19 06 09.60253
Declination	+49° 26′ 14.3969″
Characteristics
Spectral type	K7 V + M1 V
Astrometry

Proper motion (μ)	RA: 2.635 mas/yr Dec.: −16.375 mas/yr
Parallax (π)	4.5538 ± 0.5562 mas
Distance	approx. 720 ly (approx. 220 pc)

Details
Kepler-296 A
Mass	0.498+0.067 −0.087 `M`_☉
Radius	0.480+0.066 −0.087 `R`_☉
Surface gravity (log g)	4.774+0.091 −0.059 cgs
Temperature	3740±130 K
Metallicity	−0.08+0.28 −0.30 dex
Kepler-296 B
Mass	0.326+0.070 −0.079 `M`_☉
Radius	0.322+0.060 −0.068 `R`_☉
Surface gravity (log g)	4.993+0.087 −0.063 cgs
Temperature	3440±75 K
Metallicity	−0.08+0.28 −0.30 dex
Other designations
Gaia DR2 2132069633148965888, KOI-1422, KIC 11497958, 2MASS J19060960+4926143
Database references
SIMBAD	data
KIC	data

Kepler-296 is a binary star system in the constellation Draco. The primary star appears to be a late K-type main-sequence star, while the secondary is a red dwarf.

Planetary system

The following plot shows the approximate sizes of the planets in this system compared to planets in the Solar System.

Five exoplanets have been detected around the system; all are believed to be orbiting the primary star rather than its dimmer companion. Two planets in particular, Kepler-296e and Kepler-296f, are likely located in the habitable zone. For the planetary system to remain stable, no additional giant planets can be located up to orbital radius 10.1 AU.

The Kepler-296 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	—	0.079	10.864384	<0.33	—	1.61 R_🜨
c	—	0.0521	5.8416366	<0.33	—	2.00 R_🜨
d	—	0.118	19.850291	<0.33	—	2.09 R_🜨
e	—	0.169	34.14211	<0.33	—	1.53 R_🜨
f	—	0.255	63.33627	<0.33	—	1.80 R_🜨

References

^ 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.
^ Lissauer, Jack J; Marcy, Geoffrey W; Bryson, Stephen T; Rowe, Jason F; Jontof-Hutter, Daniel; Agol, Eric; Borucki, William J; Carter, Joshua A; Ford, Eric B; Gilliland, Ronald L; Kolbl, Rea; Star, Kimberly M; Steffen, Jason H; Torres, Guillermo (2014). "Validation Ofkepler's Multiple Planet Candidates. Ii. Refined Statistical Framework and Descriptions of Systems of Special Interest". The Astrophysical Journal. 784 (1): 44. arXiv:1402.6352. Bibcode:2014ApJ...784...44L. doi:10.1088/0004-637X/784/1/44. S2CID 119108651.
^ Barclay, Thomas; Quintana, Elisa V; Adams, Fred C; Ciardi, David R; Huber, Daniel; Foreman-Mackey, Daniel; Montet, Benjamin T; Caldwell, Douglas (2015). "The Five Planets in the Kepler-296 Binary System All Orbit the Primary: A Statistical and Analytical Analysis". The Astrophysical Journal. 809 (1): 7. arXiv:1505.01845. Bibcode:2015ApJ...809....7B. doi:10.1088/0004-637X/809/1/7. S2CID 37742564.
"Kepler-296". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 November 2017.
"Open Exoplanet Catalogue - Kepler-296 b". www.openexoplanetcatalogue.com. Retrieved 2021-03-19.
Becker, Juliette C.; Adams, Fred C. (2017), "Effects of Unseen Additional Planetary Perturbers on Compact Extrasolar Planetary Systems", Monthly Notices of the Royal Astronomical Society, 468 (1): 549–563, arXiv:1702.07714, Bibcode:2017MNRAS.468..549B, doi:10.1093/mnras/stx461, S2CID 119325005

External links

Kepler-296 - Open Exoplanet Catalogue

Constellation of Draco

Stars

Bayer	α (Thuban) β (Rastaban) γ (Eltanin) δ (Altais) ε (Tyl) ζ (Aldhibah) η (Athebyne) θ ι (Edasich) κ λ (Giausar) μ (Alrakis) ν (Kuma) ξ (Grumium) ο π ρ σ (Alsafi) τ υ φ χ ψ (Dziban) ψ ω
Flamsteed	6 7 (Tianyi) 8 (Taiyi) 10 (i) 15 (A) 18 (g) 19 (h) 26 36 39 (b) 42 (Fafnir) 45 (d) 64 (e) 68
Variable	TW AG BY CL CM CX DO V581
HR	3751 4126 4934 5811 6237 6618 (Alruba) 6817 7137 7783
HD	101364 156279 158259 176693 191939
Other	2MASS 1237+6526 2MASS J17554042+6551277 G 240-72 GD 356 Gliese 420 Gliese 625 Gliese 687 GRW +70 8247 Kepler-4 Kepler-10 Kepler-12 Kepler-90 Kepler-296 LP 71-82 Qatar-1 Struve 2398 TOI-1136 WISE 1647+5632

Exoplanets	Orbitar HD 139357 b HD 167042 b Hypatia Kepler-4b Kepler-10b c Kepler-12b Kepler-90e f g h i TOI-1452 b TrES-2b

Star clusters	LAMOST 1

Nebulae	Abell 50 Cat's Eye Nebula

Galaxies

NGC	3147 4121 4125 4236 4319 4345 4513 4589 5678 5777 5866 5866B 5879 5906 5907 5949 5963 5965 5982 5985 6090 6248 6285 6286 6338 6340 6365 6373 6394 6412 6503 6566 6621 6622 6670 6676 6786 6789
Other	1ES 1959+650 3C 249.1 3C 305 3C 319 3C 356 3C 371 3C 390.3 3C 401 4C +72.26 H1821+643 HFLS3 KKR 25 Markarian 876 PGC 39058 S5 1803+784 S5 2007+777 UGC 9391

Galaxy clusters	Abell 2218 CL1358+62 Draco Supercluster

Astronomical events	Swift J1644+57 SN 2005B SN 2016aps

Planetary system

See also

References

External links