HD 156279

HD 156279
Observation data; Epoch J2000 Equinox J2000
Constellation	Draco
Right ascension	17h 12m 23.20514s
Declination	+63° 21′ 07.5347″
Apparent magnitude (V)	8.167
Characteristics
Evolutionary stage	main-sequence star
Spectral type	K0
Apparent magnitude (R)	7.6
Apparent magnitude (G)	7.8657
Apparent magnitude (J)	6.677
B−V color index	0.80
Astrometry
Radial velocity (Rv)	-20.6432 km/s
Proper motion (μ)	RA: -2.026 mas/yr ; Dec.: 160.207 mas/yr
Parallax (π)	27.5995 ± 0.0273 mas
Distance	118.2 ± 0.1 ly ; (36.23 ± 0.04 pc)
Details
Mass	0.93 M☉
Radius	0.95 R☉
Luminosity	0.81[citation needed] L☉
Temperature	5453 K
Metallicity [Fe/H]	0.14±0.01 dex
Age	4 Gyr
Other designations
	BD+63 1335, Gaia DR2 1631084478574318976, HIP 84171, SAO 17390, TYC 4202-656-1, 2MASS J17122319+6321074
Database references
SIMBAD	data

HD 156279 is a type K0 star, located 36.5 pc away from Earth (119.1 light years). It has various alternate designations, including HIP 84171 and BD+63 1335. It is presumed to be a single star, as in 2019 all imaging surveys have failed to find a stellar companions.^[2]

Characteristics[]

HD 156279 has a stellar mass of 0.93 and a stellar radius of 0.95. It has a metallicity of 0.14 and an effective temperature of 5453 Kelvin. HD 156279 is 4 billion years old and based on the spectral type, K0, it is an orange colour.^[6] HD 156279 has an apparent magnitude of 8.167^[2] and an absolute magnitude of 5.27.^[7]^[8] The star is slightly enriched in heavy elements, having 140% of solar abundance.^[2]

Planetary system[]

Orbiting HD 156279 are two superjovian planets, an inner HD 156279 b (discovered in 2011)^[7] and outer HD 156279 c (discovered in 2016).^[3]

The HD 156279 planetary system^[9]^[10]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
HD 156279 b	≥9.71±0.66 M_J	0.495±0.017	131.05±0.54	0.708±0.018	—	1.11 R_J
HD 156279 c	≥8.6±0.55 M_J	—	4191⁺²⁷⁰ ₋₃₁₀	0.23±0.02	—	0.9 R_J

References[]

^ Jump up to: ^a ^b ^c 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 DR2 record for this source at VizieR.
^ Jump up to: ^a ^b ^c ^d ^e Biller, B.; Mužić, K.; Lopez, E.; Bonavita, M.; Rice, K.; Fontanive, C.; Biller, B. (2019), "A high binary fraction for the most massive close-in giant planets and brown dwarf desert members", Monthly Notices of the Royal Astronomical Society, 485 (4): 4967–4996, arXiv:1903.02332, Bibcode:2019MNRAS.485.4967F, doi:10.1093/mnras/stz671, S2CID 84180618
^ Jump up to: ^a ^b Bryan, Marta L.; Knutson, Heather A.; Howard, Andrew W.; Ngo, Henry; Batygin, Konstantin; Crepp, Justin R.; Fulton, B. J.; Hinkley, Sasha; Isaacson, Howard; Johnson, John A.; Marcy, Geoffry W.; Wright, Jason T. (2016), "Statistics of long period gas giant planets in known planetary systems", The Astrophysical Journal, 821 (2): 89, arXiv:1601.07595, Bibcode:2016ApJ...821...89B, doi:10.3847/0004-637X/821/2/89, S2CID 19709252
^ Jump up to: ^a ^b "HD 156276". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 October 2020.
^ Jump up to: ^a ^b openexoplanetcatalogue.com
^ Jump up to: ^a ^b ^c ^d NASA archive
^ Jump up to: ^a ^b Díaz, R. F.; Santerne, A.; Sahlmann, J.; Hébrard, G.; Eggenberger, A.; Santos, N. C.; Moutou, C.; Arnold, L.; Boisse, I.; Bonfils, X.; Bouchy, F.; Delfosse, X.; Desort, M.; Ehrenreich, D.; Forveille, T.; Lagrange, A. M.; Lovis, C.; Pepe, F.; Perrier, C.; Queloz, D.; Ségransan, D.; Udry, S.; Vidal-Madjar, A. (2012), "The SOPHIE search for northern extrasolar planets IV. Massive companions in the planet-brown dwarf boundary", Astronomy & Astrophysics, A113: 538, arXiv:1111.1168, Bibcode:2012A&A...538A.113D, doi:10.1051/0004-6361/201117935, S2CID 55322205
^ exoplanetkyoto.org
^ HD 82886 b on exoplanet.eu
^ HD 82886 c on exoplanet.eu

This main-sequence-star-related article is a stub. You can help Wikipedia by .

This extrasolar-planet-related article is a stub. You can help Wikipedia by .

[GaiaDR2-1] Jump up to: ^a ^b ^c 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 DR2 record for this source at VizieR.

[Fontanive2019-2] Jump up to: ^a ^b ^c ^d ^e Biller, B.; Mužić, K.; Lopez, E.; Bonavita, M.; Rice, K.; Fontanive, C.; Biller, B. (2019), "A high binary fraction for the most massive close-in giant planets and brown dwarf desert members", Monthly Notices of the Royal Astronomical Society, 485 (4): 4967–4996, arXiv:1903.02332, Bibcode:2019MNRAS.485.4967F, doi:10.1093/mnras/stz671, S2CID 84180618

[Bryan2016-3] Jump up to: ^a ^b Bryan, Marta L.; Knutson, Heather A.; Howard, Andrew W.; Ngo, Henry; Batygin, Konstantin; Crepp, Justin R.; Fulton, B. J.; Hinkley, Sasha; Isaacson, Howard; Johnson, John A.; Marcy, Geoffry W.; Wright, Jason T. (2016), "Statistics of long period gas giant planets in known planetary systems", The Astrophysical Journal, 821 (2): 89, arXiv:1601.07595, Bibcode:2016ApJ...821...89B, doi:10.3847/0004-637X/821/2/89, S2CID 19709252

[SIMBAD-4] Jump up to: ^a ^b "HD 156276". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 October 2020.

[oecs-5] Jump up to: ^a ^b openexoplanetcatalogue.com

[nasasc-6] Jump up to: ^a ^b ^c ^d NASA archive

[Diaz2011-7] Jump up to: ^a ^b Díaz, R. F.; Santerne, A.; Sahlmann, J.; Hébrard, G.; Eggenberger, A.; Santos, N. C.; Moutou, C.; Arnold, L.; Boisse, I.; Bonfils, X.; Bouchy, F.; Delfosse, X.; Desort, M.; Ehrenreich, D.; Forveille, T.; Lagrange, A. M.; Lovis, C.; Pepe, F.; Perrier, C.; Queloz, D.; Ségransan, D.; Udry, S.; Vidal-Madjar, A. (2012), "The SOPHIE search for northern extrasolar planets IV. Massive companions in the planet-brown dwarf boundary", Astronomy & Astrophysics, A113: 538, arXiv:1111.1168, Bibcode:2012A&A...538A.113D, doi:10.1051/0004-6361/201117935, S2CID 55322205

[8] xoplanetkyoto.org

[exoplanet.eu_b-9] HD 82886 b on exoplanet.eu

[10] HD 82886 c on exoplanet.eu

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

Observation data Epoch J2000 Equinox J2000
Constellation	Draco
Right ascension	17^h 12^m 23.20514^s^[1]
Declination	+63° 21′ 07.5347″^[1]
Apparent magnitude (V)	8.167^[2]
Characteristics
Evolutionary stage	main-sequence star
Spectral type	K0
Apparent magnitude (R)	7.6
Apparent magnitude (G)	7.8657
Apparent magnitude (J)	6.677
B−V color index	0.80^[3]
Astrometry

Radial velocity (R_v)	-20.6432 km/s
Proper motion (μ)	RA: -2.026^[4] mas/yr Dec.: 160.207^[4] mas/yr
Parallax (π)	27.5995 ± 0.0273^[1] mas
Distance	118.2 ± 0.1 ly (36.23 ± 0.04 pc)

Details

Mass	0.93^[5] `M`_☉
Radius	0.95^[6] `R`_☉
Luminosity	0.81^{[citation needed]} `L`_☉
Temperature	5453^[6] K
Metallicity [Fe/H]	0.14±0.01^[2] dex
Age	4^[5] Gyr

Other designations
BD+63 1335, Gaia DR2 1631084478574318976, HIP 84171, SAO 17390, TYC 4202-656-1, 2MASS J17122319+6321074^[6]
Database references
SIMBAD	data