PROFILPELAJAR.COM

12 Lyn
Observation data; Epoch J2000 Equinox J2000
Constellation	Lynx
Right ascension	06h 46m 14.13019s
Declination	+59° 26′ 30.0227″
Apparent magnitude (V)	4.86 (5.44 / 6.00)
Characteristics
Spectral type	A3V (A1.5V + A2V)
U−B color index	+0.08
B−V color index	+0.084±0.012
Astrometry
Radial velocity (Rv)	−3.0±4.2 km/s
Proper motion (μ)	RA: −19.63 mas/yr ; Dec.: −7.23 mas/yr
Parallax (π)	15.19 ± 0.78 mas
Distance	210 ± 10 ly ; (66 ± 3 pc)
Absolute magnitude (MV)	0.77
Orbit
Period (P)	907.6 yr
Semi-major axis (a)	2.30″
Eccentricity (e)	0.3700
Inclination (i)	134.7°
Longitude of the node (Ω)	166.5°
Periastron epoch (T)	B 2677.4
Argument of periastron (ω); (secondary)	322.6°
Details
12 Lyn A
Radius	2.52 R☉
Rotational velocity (v sin i)	90±30 km/s
12 Lyn B
Radius	2.44 R☉
Rotational velocity (v sin i)	100±30 km/s
Other designations
	12 Lyn, BD+59°1015, GC 9850, HD 48250, HIP 32438, HR 2470, SAO 25939, WDS 06462+5927
Database references
SIMBAD	12 Lyn
	12 Lyn A
	12 Lyn B

12 Lyncis, abbreviated 12 Lyn, is a triple star^[8] system in the constellation Lynx. It is visible to the naked eye as a faint point of light with a combined apparent visual magnitude of 4.87. When seen through a telescope, it can be separated into three stars: two components with magnitudes 5.4 and 6.0 that lie at an angular separation by 1.8″ (as of 1992) and a yellow-hued star of magnitude 7.2 at a separation of 8.6″ (as of 1990).^[9]^[10] The orbit of the two brighter stars is not known with certainty, but appears to have a period of somewhere around 700 to 900 years.^[11] The pair have a projected separation of 128 AU.^[4] Parallax indicates the system is 210±10 light years distant from Earth.^[1]

References

^ ^a ^b ^c ^d ^e ^f van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Archived from the original on 2016-04-02.
^ ^a ^b ^c ^d 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 "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 28 May 2017.
^ ^a ^b ^c ^d ^e ^f Howe, K. S.; Clarke, C. J. (January 2009). "An analysis of v sin (i) correlations in early-type binaries". Monthly Notices of the Royal Astronomical Society. 392 (1): 448–454. Bibcode:2009MNRAS.392..448H. doi:10.1111/j.1365-2966.2008.14073.x.
^ Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
^ "* 12 Lyn". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 November 2012.
^ 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.
^ Mason, Brian D.; et al. (2001), "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920.
^ Monks, Neale (2010). Go-To Telescopes Under Suburban Skies. New York, New York: Springer Science & Business Media. p. 56. ISBN 9781441968517.
^ Malkov, O. Yu.; Tamazian, V.S.; Docobo, J.A.; Chulkov, D.A. (2012). "Dynamical Masses of a Selected Sample of Orbital Binaries". Astronomy and Astrophysics. 546: 5. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774. A69.

[HIP-1] ^ ^a ^b ^c ^d ^e ^f van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Archived from the original on 2016-04-02.

[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.

[ORB6-3] "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 28 May 2017.

[Howe2009-4] ^ ^a ^b ^c ^d ^e ^f Howe, K. S.; Clarke, C. J. (January 2009). "An analysis of v sin (i) correlations in early-type binaries". Monthly Notices of the Royal Astronomical Society. 392 (1): 448–454. Bibcode:2009MNRAS.392..448H. doi:10.1111/j.1365-2966.2008.14073.x.

[Johnson-5] Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.

[Gontcharov-6] Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.

[SIMBAD-7] "* 12 Lyn". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 November 2012.

[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.

[wds2001-9] Mason, Brian D.; et al. (2001), "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920.

[10] Monks, Neale (2010). Go-To Telescopes Under Suburban Skies. New York, New York: Springer Science & Business Media. p. 56. ISBN 9781441968517.

[malkov-11] Malkov, O. Yu.; Tamazian, V.S.; Docobo, J.A.; Chulkov, D.A. (2012). "Dynamical Masses of a Selected Sample of Orbital Binaries". Astronomy and Astrophysics. 546: 5. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774. A69.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

PROFILPELAJAR.COM

12 Lyncis

References

Read other articles:

FIS

Nokia 3110

Airplane

Catherine Called Birdy (film)

Unterföhring

STIE Paripurna

Huntingdon

Flower garden

Amonium besi(III) sulfat

Presentation at the Temple (Fra Angelico)

土库曼斯坦总统

Massachusetts Route 113

哥伦布 (密西西比州)

Hermandad del Santo Cristo de los Artilleros (Valladolid)

Alessandro di Sassonia

Sant'Anastasia (titolo cardinalizio)

العلاقات الدومينيكانية الشمال مقدونية

Miloš Forman

Sijamapolang, Humbang Hasundutan

カーズ (映画)