12 Trianguli

{{Starbox begin

| name = 12 Trianguli

}}

{{Starbox image

| image=

{{Location mark

|image=Triangulum constellation map.svg|alt=|float=center|width=280

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=12 Trianguli

|x=359|y=527

}}

|caption=Location of 12 Trianguli (circled)

}}

{{Starbox observe

| epoch = J2000.0 (ICRS)

| constell = Triangulum

| ra = {{RA|02|28|09.980}}

| dec = {{DEC|+29|40|09.59}}

| appmag_v = 5.37

}}

{{Starbox character

| type =

| class = F0 III

| u-b =

| b-v = +0.29

}}

{{Starbox astrometry

| radial_v = {{val|-24.8|2.8}}

| parallax = 20.4105

| p_error = 0.0942

| parallax_footnote =

| prop_mo_ra = −15.632

| prop_mo_dec = −86.097

| absmag_v =

}}

{{Starbox detail

| mass = 1.6

| radius =

| luminosity = 14

| temperature = 7,199

| gravity = 3.79

| metal_fe = 0.27

| rotational_velocity = 85

| age_gyr = 2.19

}}

{{Starbox catalog

| names = {{odlist|F = 12 Trianguli|AG = +29°296|BD = +29°417|GC = 2956|HD = 15257|HIP = 11486|HR = 717|SAO = 75382}}

}}

{{Starbox reference

| Simbad = 12+Tri

}}

12 Trianguli is a solitary star located in the northern constellation Triangulum, with an apparent magnitude of 5.37, making it faintly visible to the naked eye under ideal conditions. The star is situated 160 light years away but is approaching with a heliocentric radial velocity of {{val|-24.8|ul=km/s}}. It is calculated to be about {{val|2.19|ul=Gyr}} old with a stellar classification of F0 III, making it an F-type giant. It has 1.6 times the mass of the Sun and shines at 14 times the luminosity of the Sun from its photosphere at an effective temperature of {{val|7199|ul=K|fmt=commas}}.

Together with ι Trianguli and 10 Trianguli, it forms part of the obsolete Triangulum Minus.

References

{{reflist||refs=

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{{cite journal |last1=Reiners |first1=Ansgar |last2=Zechmeister |first2=Mathias |title=Radial velocity photon limits for the dwarf stars of spectral classes F--M |journal=The Astrophysical Journal Supplement Series |date=2020 |volume=247 |issue=1 |pages=11 |doi=10.3847/1538-4365/ab609f |bibcode=2020ApJS..247...11R |arxiv=1912.04120 |doi-access=free}}

{{cite journal |last1=Kervella |first1=Pierre |last2=Arenou |first2=Frédéric |last3=Mignard |first3=François |last4=Thévenin |first4=Frédéric |title=Stellar and substellar companions of nearby stars from Gaia DR2 - Binarity from proper motion anomaly |journal= Astronomy and Astrophysics|date=March 2019 |volume=623 |page=623 |doi=10.1051/0004-6361/201834371 |bibcode=2019A&A...623A..72K |arxiv=1811.08902 |doi-access=free}}

{{cite journal |display-authors=1 |last1=Cruzalèbes |first1=P. |last2=Petrov |first2=R.G. |last3=Robbe-Dubois|first3=S. |last4=Varga |first4=J. |last5=Burtscher |first5=J. |last6=Allouche |first6=F. |last7=Berio |first7=P. |last8=Hofmann|first8=K.-H. |last9=Hron |first9=J. |last10=Jaffe |first10=W. |last11=Lagarde |first11=S. |last12=Lopez |first12=B. |last13=Matter |first13=A. |last14=Meilland |first14=A. |last15=Meisenheimer |first15=K. |last16=Millour |first16=F. |last17=Schertl |first17=D. |title=A catalogue of stellar diameters and fluxes for mid-infrared interferometry |journal=Monthly Notices of the Royal Astronomical Society |date=2019 |volume=490 |issue=3 |doi=10.1093/mnras/stz2803 |pages=3158–3176 |bibcode=2019MNRAS.490.3158C |arxiv=1910.00542 |doi-access=free}}

{{cite journal |last1=Netopil |first1=Martin |title=Metallicity calibrations for dwarf stars and giants in the Geneva photometric system |journal=Monthly Notices of the Royal Astronomical Society |date=2017 |volume=469 |issue=3 |pages=3042–3055 |doi=10.1093/mnras/stx1077 |bibcode=2017MNRAS.469.3042N |arxiv=1705.00883 |doi-access=free}}

{{cite journal |last1=Luck |first1=R. Earle |title=Abundances in the Local Region I: G and K Giants |journal=The Astronomical Journal |date=2015 |volume=150 |issue=3 |pages=88 |doi=10.1088/0004-6256/150/3/88 |bibcode=2015AJ....150...88L |arxiv=1507.01466 |doi-access=free}}

{{cite journal |last1=van Belle|first1=G.T. |title=Interferometric observations of rapidly rotating stars |journal= The Astronomy and Astrophysics Review|date=2012 |volume=20 |issue=1 |page=51 |doi=10.1007/s00159-012-0051-2 |bibcode=2012A&ARv..20...51V |arxiv=1204.2572 |doi-access=free}}

{{cite journal |last1=de Bruijne |first1=J.H.J. |last2=Eilers |first2=A.-C. |title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project |journal= Astronomy & Astrophysics|date=2012 |volume=546 |pages=14 |doi=10.1051/0004-6361/201219219 |bibcode=2012A&A...546A..61D |arxiv=1208.3048 |doi-access=free}}

{{citation | 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 | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 |doi-access=free}}

}}

Category:F-type giants

Category:Durchmusterung objects