en HD 91190

HD 91190
Observation data; Epoch J2000 Equinox J2000
Constellation	Draco
Right ascension	10h 35m 05.49379s
Declination	+75° 42′ 46.4541″
Apparent magnitude (V)	4.86
Characteristics
Spectral type	G8 III-IIIb
B−V color index	0.957±0.003
Astrometry
Radial velocity (Rv)	+16.6 km/s
Proper motion (μ)	RA: −0.599 mas/yr ; Dec.: −17.436 mas/yr
Parallax (π)	4.5045 ± 0.1730 mas
Distance	720 ± 30 ly ; (222 ± 9 pc)
Absolute magnitude (MV)	+0.46
Details
Mass	2.39 M☉
Luminosity	69 L☉
Surface gravity (log g)	2.59 cgs
Temperature	4,965±106 K
Metallicity [Fe/H]	−0.03 dex
Age	2.06 Gyr
Other designations
	BD+76° 393, FK5 395, HD 91190, HIP 51808, HR 4126, SAO 7164
Database references
SIMBAD	data

HD 91190 is a suspected astrometric binary^[7] star system in the northern circumpolar constellation of Draco. It is faintly visible to the naked eye, having an apparent visual magnitude of 4.86.^[2] The distance to HD 91190, as estimated from its annual parallax shift of 4.5 mas,^[1] is around 720 light years. This system is moving further away from the Sun with a heliocentric radial velocity of +17 km/s,^[4] having come to within 170 ly some 2.4 million years ago.^[2]

At the age of about two billion years,^[4] this is an evolved G-type giant star with a stellar classification of G8 III-IIIb.^[3] It has 2.39^[4] times the mass of the Sun and is radiating 69^[4] times the Sun's luminosity from its photosphere at an effective temperature of around 4,965 K.^[4]

References

^ ^a ^b ^c ^d ^e ^f 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.
^ ^a ^b ^c ^d ^e 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.
^ ^a ^b Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3): 88, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114, 88.
^ ^a ^b Liu, Y. J.; et al. (April 2014), "The Lithium Abundances of a Large Sample of Red Giants", The Astrophysical Journal, 785 (2): 12, arXiv:1404.1687, Bibcode:2014ApJ...785...94L, doi:10.1088/0004-637X/785/2/94, S2CID 119226316, 94.
^ "HD 91190". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-17.
^ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.

[GaiaDR2-1] ^ ^a ^b ^c ^d ^e ^f 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.

[Anderson2012-2] 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.

[perkins1989-3] Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.

[Luck2015-4] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3): 88, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114, 88.

[Liu2014-5] Liu, Y. J.; et al. (April 2014), "The Lithium Abundances of a Large Sample of Red Giants", The Astrophysical Journal, 785 (2): 12, arXiv:1404.1687, Bibcode:2014ApJ...785...94L, doi:10.1088/0004-637X/785/2/94, S2CID 119226316, 94.

[SIMBAD-6] "HD 91190". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-17.

[Eggleton2008-7] Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

Agama	Bahasa	Biografi	Budaya	Ekonomi	Elektronika
Film	Filsafat	Geografi	Indonesia	Ilmu	Lingkungan
Masyarakat	Matematika	Militer	Mitologi	Musik	Olahraga
Pendidikan	Politik	Sastra	Sejarah	Seni	Teknologi

HD 91190

References

Portal di Ensiklopedia Dunia