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12 Trianguli

January 10, 2023

12 Trianguli is a solitary[10] star located in the northern constellation Triangulum, with an apparent magnitude of 5.37,[2] making it faintly visible to the naked eye under ideal conditions. The star is situated 160 light years[1] away but is approaching with a heliocentric radial velocity of −24.8 km/s.[7][6] It is calculated to be about 2.19 Gyr old[6] with a stellar classification of F0 III,[3][4][5][6] making it an F-type giant. It has 1.6 times the mass of the Sun[2] and shines at 14 times the luminosity of the Sun[2] from its photosphere at an effective temperature of 7,199 K.[2]

12 Trianguli
Location of 12 Trianguli (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Triangulum
Right ascension 02h 28m 09.980s[1]
Declination +29° 40′ 09.59″[1]
Apparent magnitude (V) 5.37[2]
Characteristics
Spectral type F0 III[3][4][5][6]
B−V color index +0.29[6]
Astrometry
Radial velocity (Rv)−24.8±2.8[7][6] km/s
Proper motion (μ) RA: −15.632[1] mas/yr
Dec.: −86.097[1] mas/yr
Parallax (π)20.4105 ± 0.0942 mas[1]
Distance159.8 ± 0.7 ly
(49.0 ± 0.2 pc)
Details
Mass1.6[2] M☉
Luminosity14[2] L☉
Surface gravity (log g)3.79[6] cgs
Temperature7,199[2] K
Metallicity [Fe/H]0.27[5] dex
Rotational velocity (v sin i)85[8][9] km/s
Age2.19[6] Gyr
Other designations
12 Trianguli, AG+29°296, BD+29°417, GC 2956, HD 15257, HIP 11486, HR 717, SAO 75382
Database references
SIMBADdata

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

References

  1. ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b c d e f g h Reiners, Ansgar; Zechmeister, Mathias (2020). "Radial velocity photon limits for the dwarf stars of spectral classes F--M". The Astrophysical Journal Supplement Series. 247 (1): 11. arXiv:1912.04120. Bibcode:2020ApJS..247...11R. doi:10.3847/1538-4365/ab609f.
  3. ^ a b Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric (March 2019). "Stellar and substellar companions of nearby stars from Gaia DR2 - Binarity from proper motion anomaly". Astronomy and Astrophysics. 623: 623. arXiv:1811.08902. Bibcode:2019A&A...623A..72K. doi:10.1051/0004-6361/201834371.
  4. ^ a b Cruzalèbes, P.; et al. (2019). "A catalogue of stellar diameters and fluxes for mid-infrared interferometry". Monthly Notices of the Royal Astronomical Society. 490 (3): 3158–3176. arXiv:1910.00542. Bibcode:2019MNRAS.490.3158C. doi:10.1093/mnras/stz2803.
  5. ^ a b c Netopil, Martin (2017). "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system". Monthly Notices of the Royal Astronomical Society. 469 (3): 3042–3055. arXiv:1705.00883. Bibcode:2017MNRAS.469.3042N. doi:10.1093/mnras/stx1077.
  6. ^ a b c d e f g h Luck, R. Earle (2015). "Abundances in the Local Region I: G and K Giants". The Astronomical Journal. 150 (3): 88. arXiv:1507.01466. Bibcode:2015AJ....150...88L. doi:10.1088/0004-6256/150/3/88.
  7. ^ a b Brandt, Timothy D. (2021). "The Hipparcos-Gaia Catalog of Accelerations: Gaia EDR3 Edition". The Astrophysical Journal Supplement Series. 254 (2): 42. arXiv:2105.11662. Bibcode:2021ApJS..254...42B. doi:10.3847/1538-4365/abf93c.
  8. ^ van Belle, G.T. (2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review. 20 (1): 51. arXiv:1204.2572. Bibcode:2012A&ARv..20...51V. doi:10.1007/s00159-012-0051-2.
  9. ^ de Bruijne, J.H.J.; Eilers, A.-C. (2012). "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project". Astronomy & Astrophysics. 546: 14. arXiv:1208.3048. Bibcode:2012A&A...546A..61D. doi:10.1051/0004-6361/201219219.
  10. ^ 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

January 10, 2023
trianguli, solitary, star, located, northern, constellation, triangulum, with, apparent, magnitude, making, faintly, visible, naked, under, ideal, conditions, star, situated, light, years, away, approaching, with, heliocentric, radial, velocity, calculated, ab. 12 Trianguli is a solitary 10 star located in the northern constellation Triangulum with an apparent magnitude of 5 37 2 making it faintly visible to the naked eye under ideal conditions The star is situated 160 light years 1 away but is approaching with a heliocentric radial velocity of 24 8 km s 7 6 It is calculated to be about 2 19 Gyr old 6 with a stellar classification of F0 III 3 4 5 6 making it an F type giant It has 1 6 times the mass of the Sun 2 and shines at 14 times the luminosity of the Sun 2 from its photosphere at an effective temperature of 7 199 K 2 12 TrianguliLocation of 12 Trianguli circled Observation dataEpoch J2000 0 Equinox J2000 0 ICRS Constellation TriangulumRight ascension 02h 28m 09 980s 1 Declination 29 40 09 59 1 Apparent magnitude V 5 37 2 CharacteristicsSpectral type F0 III 3 4 5 6 B V color index 0 29 6 AstrometryRadial velocity Rv 24 8 2 8 7 6 km sProper motion m RA 15 632 1 mas yr Dec 86 097 1 mas yrParallax p 20 4105 0 0942 mas 1 Distance159 8 0 7 ly 49 0 0 2 pc DetailsMass1 6 2 M Luminosity14 2 L Surface gravity log g 3 79 6 cgsTemperature7 199 2 KMetallicity Fe H 0 27 5 dexRotational velocity v sin i 85 8 9 km sAge2 19 6 GyrOther designations12 Trianguli AG 29 296 BD 29 417 GC 2956 HD 15257 HIP 11486 HR 717 SAO 75382Database referencesSIMBADdataTogether with i Trianguli and 10 Trianguli it forms part of the obsolete Triangulum Minus References Edit a b c d e f Brown A G A et al Gaia collaboration 2021 Gaia Early Data Release 3 Summary of the contents and survey properties Astronomy amp Astrophysics 649 A1 arXiv 2012 01533 Bibcode 2021A amp A 649A 1G doi 10 1051 0004 6361 202039657 S2CID 227254300 Erratum doi 10 1051 0004 6361 202039657e Gaia EDR3 record for this source at VizieR a b c d e f g h Reiners Ansgar Zechmeister Mathias 2020 Radial velocity photon limits for the dwarf stars of spectral classes F M The Astrophysical Journal Supplement Series 247 1 11 arXiv 1912 04120 Bibcode 2020ApJS 247 11R doi 10 3847 1538 4365 ab609f a b Kervella Pierre Arenou Frederic Mignard Francois Thevenin Frederic March 2019 Stellar and substellar companions of nearby stars from Gaia DR2 Binarity from proper motion anomaly Astronomy and Astrophysics 623 623 arXiv 1811 08902 Bibcode 2019A amp A 623A 72K doi 10 1051 0004 6361 201834371 a b Cruzalebes P et al 2019 A catalogue of stellar diameters and fluxes for mid infrared interferometry Monthly Notices of the Royal Astronomical Society 490 3 3158 3176 arXiv 1910 00542 Bibcode 2019MNRAS 490 3158C doi 10 1093 mnras stz2803 a b c Netopil Martin 2017 Metallicity calibrations for dwarf stars and giants in the Geneva photometric system Monthly Notices of the Royal Astronomical Society 469 3 3042 3055 arXiv 1705 00883 Bibcode 2017MNRAS 469 3042N doi 10 1093 mnras stx1077 a b c d e f g h Luck R Earle 2015 Abundances in the Local Region I G and K Giants The Astronomical Journal 150 3 88 arXiv 1507 01466 Bibcode 2015AJ 150 88L doi 10 1088 0004 6256 150 3 88 a b Brandt Timothy D 2021 The Hipparcos Gaia Catalog of Accelerations Gaia EDR3 Edition The Astrophysical Journal Supplement Series 254 2 42 arXiv 2105 11662 Bibcode 2021ApJS 254 42B doi 10 3847 1538 4365 abf93c van Belle G T 2012 Interferometric observations of rapidly rotating stars The Astronomy and Astrophysics Review 20 1 51 arXiv 1204 2572 Bibcode 2012A amp ARv 20 51V doi 10 1007 s00159 012 0051 2 de Bruijne J H J Eilers A C 2012 Radial velocities for the HIPPARCOS Gaia Hundred Thousand Proper Motion project Astronomy amp Astrophysics 546 14 arXiv 1208 3048 Bibcode 2012A amp A 546A 61D doi 10 1051 0004 6361 201219219 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 Retrieved from https en wikipedia org w index php title 12 Trianguli amp oldid 1102988841, wikipedia, wiki, book, books, library,

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