HD 190007

HD 190007
	; Four representative light curves for HD 190007, adapted from Burt et al. (2020)[1]
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquila
Right ascension	20h 02m 47.04569s[2]
Declination	+03° 19′ 34.2658″[2]
Apparent magnitude (V)	7.46[1]
Characteristics
Spectral type	K5 V[3]
U−B color index	+1.09[4]
B−V color index	+1.11[4]
Variable type	BY Dra[5]
Astrometry
Radial velocity (Rv)	−30.49±0.12[2] km/s
Proper motion (μ)	RA: −90.383 mas/yr[2] ; Dec.: 119.430 mas/yr[2]
Parallax (π)	78.6465 ± 0.0198 mas[2]
Distance	41.47 ± 0.01 ly ; (12.715 ± 0.003 pc)
Absolute magnitude (MV)	6.91[6]
Details
Mass	0.77±0.02[1] M☉
Radius	0.80[7] R☉
Luminosity	0.24[7] L☉
Surface gravity (log g)	4.50[8] cgs
Temperature	4610±20[1] K
Metallicity [Fe/H]	0.16[8] dex
Rotation	28.626±0.046 d[1]
Other designations
	V1654 Aql, BD+02°4076, GJ 775, HD 190007, HIP 98698, SAO 125379[9]
Database references
SIMBAD	data
ARICNS	data

HD 190007, also known as Gliese 775, is a star in the constellation of Aquila. Parallax measurements by Gaia put the star at a distance of 41.5 light-years (12.7 parsecs) away.

HD 190007 is a BY Draconis variable. It is also a K-type main-sequence star with a mass of 0.77 M_☉.

Planetary system

The planet HD 190007 b on a close orbit was first detected in 2020 by the radial-velocity method,[1] with an update published in 2023.[10]

The HD 190007 planetary system[1][10]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥15.5+1.2 −1.3 M_🜨	0.092±0.0008	11.724128(99)	0.136+0.085 −0.080	—	—

References

Burt, Jennifer; Feng, Fabo; Holden, Bradford; Mamajek, Eric E.; Huang, Chelsea X.; Rosenthal, Mickey M.; Wang, Songhu; Butler, R. Paul; Vogt, Steven S.; Laughlin, Gregory; Henry, Gregory W.; Teske, Johanna K.; Wang, Sharon X.; Crane, Jeffrey D.; Shectman, Steve A. (2021). "A Collage of Small Planets from the Lick–Carnegie Exoplanet Survey: Exploring the Super-Earth and Sub-Neptune Mass Regime". The Astronomical Journal. 161 (1): 10. arXiv:2011.08867. Bibcode:2021AJ....161...10B. doi:10.3847/1538-3881/abc2d0. S2CID 227013469.
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.
Kirkpatrick, J. D.; et al. (1991). "A standard stellar spectral sequence in the red/near-infrared - Classes K5 to M9". Astrophysical Journal Supplement Series. 77: 417. Bibcode:1991ApJS...77..417K. doi:10.1086/191611.
Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1: B/gcvs. Bibcode:2009yCat....102025S.
Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
Chandler, Colin Orion; McDonald, Iain; Kane, Stephen R. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. S2CID 119246448.
Mishenina, T. V.; Pignatari, M.; Korotin, S. A.; Soubiran, C.; Charbonnel, C.; Thielemann, F.-K.; Gorbaneva, T. I.; Basak, N. Yu. (2013). "10.1051/0004-6361/201220687". Astronomy & Astrophysics. 552: A128. arXiv:1303.1730. Bibcode:2013A&A...552A.128M. doi:10.1051/0004-6361/201220687. S2CID 119268097.
"HD 190007". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 4 September 2017.
Stalport, M.; Cretignier, M.; et al. (August 2023). "A review of planetary systems around HD 99492, HD 147379 and HD 190007 with HARPS-N". Astronomy & Astrophysics. arXiv:2308.05669.

External links

Sol Station: http://www.solstation.com/stars3/100-ks.htm

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[Burt2020-1] Burt, Jennifer; Feng, Fabo; Holden, Bradford; Mamajek, Eric E.; Huang, Chelsea X.; Rosenthal, Mickey M.; Wang, Songhu; Butler, R. Paul; Vogt, Steven S.; Laughlin, Gregory; Henry, Gregory W.; Teske, Johanna K.; Wang, Sharon X.; Crane, Jeffrey D.; Shectman, Steve A. (2021). "A Collage of Small Planets from the Lick–Carnegie Exoplanet Survey: Exploring the Super-Earth and Sub-Neptune Mass Regime". The Astronomical Journal. 161 (1): 10. arXiv:2011.08867. Bibcode:2021AJ....161...10B. doi:10.3847/1538-3881/abc2d0. S2CID 227013469.

[GaiaDR3-2] 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.

[kirkpatrick1991-3] Kirkpatrick, J. D.; et al. (1991). "A standard stellar spectral sequence in the red/near-infrared - Classes K5 to M9". Astrophysical Journal Supplement Series. 77: 417. Bibcode:1991ApJS...77..417K. doi:10.1086/191611.

[EgUBV-4] Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.

[gcvs-5] Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1: B/gcvs. Bibcode:2009yCat....102025S.

[xhip-6] Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.

[Chandler-7] Chandler, Colin Orion; McDonald, Iain; Kane, Stephen R. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. S2CID 119246448.

[Mishenina-8] Mishenina, T. V.; Pignatari, M.; Korotin, S. A.; Soubiran, C.; Charbonnel, C.; Thielemann, F.-K.; Gorbaneva, T. I.; Basak, N. Yu. (2013). "10.1051/0004-6361/201220687". Astronomy & Astrophysics. 552: A128. arXiv:1303.1730. Bibcode:2013A&A...552A.128M. doi:10.1051/0004-6361/201220687. S2CID 119268097.

[SIMBAD-9] "HD 190007". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 4 September 2017.

[Stalport2023-10] Stalport, M.; Cretignier, M.; et al. (August 2023). "A review of planetary systems around HD 99492, HD 147379 and HD 190007 with HARPS-N". Astronomy & Astrophysics. arXiv:2308.05669.