49 Aurigae

49 Aurigae
Observation data; Epoch J2000 Equinox J2000
Constellation	Auriga
Right ascension	06h 30m 02.97400s
Declination	+46° 41′ 08.0041″
Apparent magnitude (V)	5.26
Characteristics
Evolutionary stage	main sequence
Spectral type	A0 Vnn
B−V color index	−0.008±0.006
Astrometry
Radial velocity (Rv)	+17.0±2.8 km/s
Proper motion (μ)	RA: −7.582 mas/yr ; Dec.: +7.854 mas/yr
Parallax (π)	4.7747 ± 0.0978 mas
Distance	680 ± 10 ly ; (209 ± 4 pc)
Absolute magnitude (MV)	−0.01
Details
Radius	2.3 R☉
Luminosity	3.28 L☉
Temperature	8,794 K
Rotational velocity (v sin i)	149 km/s
Other designations
	49 Aur, BD+28°1168, FK5 2504, HD 46553, HIP 31434, HR 2398, SAO 78524
Database references
SIMBAD	data

49 Aurigae is a single^[8] star located 680^[1] light years away from the Sun in the northern constellation of Auriga.^[7] It is visible to the naked eye as a dim, white-hued star with an apparent visual magnitude of 5.26.^[2] The star is moving away from the Earth with a heliocentric radial velocity of +17 km/s, having come to within 149 ly some 5.5 million years ago.^[2] It is positioned near the ecliptic and thus is subject to lunar occultations.^[9]^[10]

This object is an A-type main-sequence star with a stellar classification of A0 Vnn,^[3] where the 'n' notation indicates "nebulous" lines due to rapid rotation. It is spinning with a projected rotational velocity of 149 km/s.^[6] This star has around 2.3^[4] times the radius of the Sun and is radiating over three^[2] times the Sun's luminosity from its photosphere at an effective temperature of 8,794 K.^[5]

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. Gaia DR2 record for this source at VizieR.
^ ^a ^b ^c ^d ^e ^f ^g ^h 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 Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
^ ^a ^b Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (Third ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
^ ^a ^b McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–357, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
^ ^a ^b Dworetsky, Michael M. (November 1974), "Rotational Velocities of a0 Stars", Astrophysical Journal Supplement, 28: 101, Bibcode:1974ApJS...28..101D, doi:10.1086/190312.
^ ^a ^b "49 Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-05-24.
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
^ Meyer, C.; et al. (1995), "Observations of lunar occultations at Observatoire de la Cote d'Azur", Astronomy and Astrophysics Supplement, 110: 107, Bibcode:1995A&AS..110..107M.
^ Schmidtke, P. C.; Africano, J. L. (2011), "KPNO Lunar Occultation Summary. III", The Astronomical Journal, 141 (1): 10, Bibcode:2011AJ....141...10S, doi:10.1088/0004-6256/141/1/10.

[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. Gaia DR2 record for this source at VizieR.

[Anderson2012-2] ^ ^a ^b ^c ^d ^e ^f ^g ^h 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.

[Cowley1969-3] Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.

[Fracassini2001-4] Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (Third ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.

[McDonald2012-5] McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–357, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.

[Dworetsky1974-6] Dworetsky, Michael M. (November 1974), "Rotational Velocities of a0 Stars", Astrophysical Journal Supplement, 28: 101, Bibcode:1974ApJS...28..101D, doi:10.1086/190312.

[SIMBAD-7] "49 Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-05-24.

[Eggleton2008-8] Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.

[Meyer1995-9] Meyer, C.; et al. (1995), "Observations of lunar occultations at Observatoire de la Cote d'Azur", Astronomy and Astrophysics Supplement, 110: 107, Bibcode:1995A&AS..110..107M.

[Schmidtke2011-10] Schmidtke, P. C.; Africano, J. L. (2011), "KPNO Lunar Occultation Summary. III", The Astronomical Journal, 141 (1): 10, Bibcode:2011AJ....141...10S, doi:10.1088/0004-6256/141/1/10.

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49 Aurigae

References

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