12 Lyncis

{{Starbox observe

| epoch=J2000

| constell= Lynx

| ra= {{RA|06|46|14.13019}}{{cite journal|title=Validation of the new Hipparcos reduction |url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL |author=van Leeuwen, F. |display-authors=etal |journal=Astronomy and Astrophysics |volume=474 |issue=2 |pages=653–664 |date=2007 |arxiv=0708.1752 |bibcode=2007A&A...474..653V |doi=10.1051/0004-6361:20078357 |s2cid = 18759600|url-status=dead |archiveurl=https://web.archive.org/web/20160402233353/http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A&A...474..653VFUL |archivedate=2016-04-02 }}

| dec= {{DEC|+59|26|30.0227}}

| appmag_v=4.86 (5.44 / 6.00)

}}

{{Starbox character

| class= A3V{{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | s2cid=119257644 | postscript=. }} {{nowrap|(A1.5V + A2V)}}

| b-v={{Val|+0.084|0.012}}

| u-b=+0.08{{cite journal|title=UBVRIJKL Photometry of the Bright Stars|author1=Johnson, H. L.|journal=Communications of the Lunar and Planetary Laboratory|volume=4|date=1966|page=99|bibcode=1966CoLPL...4...99J}}

}}

{{Starbox astrometry

| radial_v= {{Val|−3.0|4.2}}{{cite journal|title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system|author=Gontcharov, G. A.|date=2006|journal=Astronomy Letters|volume=32|issue=11|pages=759–771|bibcode=2006AstL...32..759G|doi=10.1134/S1063773706110065|arxiv=1606.08053|s2cid=119231169}}

| prop_mo_ra= −19.63

| prop_mo_dec= −7.23

| parallax=15.19

| p_error=0.78

| parallax_footnote=

| absmag_v = 0.77

}}

{{Starbox orbit

| reference = {{cite web|url=http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6|title=Sixth Catalog of Orbits of Visual Binary Stars|publisher=United States Naval Observatory|accessdate=28 May 2017|archive-date=1 August 2017|archive-url=https://web.archive.org/web/20170801102553/http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6|url-status=dead}}

| period = 907.6

| axis = 2.30

| inclination = 134.7

| node = 166.5

| periastron = B 2677.4

| eccentricity = 0.3700

| periarg = 322.6

}}

{{Starbox detail

| source =

| component1 = 12 Lyn A

| mass =

| radius = 2.52

| luminosity =

| temperature =

| metal_fe =

| gravity =

| rotational_velocity = {{Val|90|30}}{{cite journal | last1=Howe | first1=K. S. | last2=Clarke | first2=C. J. | title=An analysis of v sin (i) correlations in early-type binaries | journal=Monthly Notices of the Royal Astronomical Society | volume=392 | issue=1 | pages=448–454 |date=January 2009 | doi=10.1111/j.1365-2966.2008.14073.x | bibcode=2009MNRAS.392..448H | doi-access=free }}

| age_myr =

| component2 = 12 Lyn B

| radius2 = 2.44

| rotational_velocity2 = {{Val|100|30}}

}}

{{Starbox catalog

| names = {{odlist | F=12 Lyn | BD=+59°1015 | HD=48250 | HIP=32438 | HR=2470 | SAO=25939 | GC=9850 | WDS=06462+5927 }}{{cite simbad|title=* 12 Lyn|access-date=20 November 2012}}

| b-v=+0.08{{cite journal|title=UBVRIJKL Photometry of the Bright Stars|author1=Johnson, H. L.|journal=Communications of the Lunar and Planetary Laboratory|volume=4|date=1966|page=99|bibcode=1966CoLPL...4...99J}}

}}

{{Starbox reference

| Simbad=12+Lyn | sn=12 Lyn

| Simbad2=ADS+5400+A | sn2=12 Lyn A

| Simbad3=ADS+5400+B | sn3=12 Lyn B

}}

12 Lyncis, abbreviated 12 Lyn, is a triple star{{cite journal | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }} 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).{{cite book | author=Monks, Neale | title= Go-To Telescopes Under Suburban Skies | url=https://books.google.com/books?id=waO6tUtfblsC&pg=PA56 | page=56 | isbn=9781441968517 |year=2010 | publisher =Springer Science & Business Media | location =New York, New York }} 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.{{cite journal|author1=Malkov, O. Yu. |author2=Tamazian, V.S. |author3=Docobo, J.A. |author4=Chulkov, D.A. |date=2012|title=Dynamical Masses of a Selected Sample of Orbital Binaries |journal=Astronomy and Astrophysics |volume=546|id=A69 |pages=5|doi=10.1051/0004-6361/201219774 | bibcode =2012A&A...546A..69M|doi-access=free }} The pair have a projected separation of {{Val|128|ul=AU}}. Parallax indicates the system is {{Val|210|10}} light years distant from Earth.