1 Trianguli

From Wikipedia, the free encyclopedia
1 Trianguli
Observation data
Epoch J2000.0      Equinox (ICRS)
Constellation Triangulum
Right ascension 01h 42m 05.92s[1]
Declination +29° 30′ 21.84″[1]
Apparent magnitude (V) 7.52 ± 0.01[2]
Characteristics
Evolutionary stage main sequence
Spectral type A2 V[3]
Astrometry
Radial velocity (Rv)7.0 ± 4.5[4] km/s
Proper motion (μ) RA: −10.248[1] mas/yr
Dec.: −0.801[1] mas/yr
Parallax (π)4.4547 ± 0.1296[1] mas
Distance730 ± 20 ly
(224 ± 7 pc)
Absolute magnitude (MV)0.78[5]
Details
Mass2.4 ± 0.3[6] M☉
Radius2.68+0.13
−0.08[6] R☉
Luminosity40.9[7] L☉
Surface gravity (log g)3.9 ± 0.1[8] cgs
Temperature9172+825
−372[8] K
Metallicity [Fe/H]0.00[9] dex
Age348[9] Myr
Other designations
1 Trianguli, AG+29 220, BD+28°282, HD 10407, HIP 7948, GSC 01762-00704
Database references
SIMBADdata

1 Trianguli is a solitary star located in the northern constellation Triangulum. With an apparent magnitude of 7.52,[2] it is too faint to be seen with the naked eye but can be seen easily with binoculars. The star is currently 730 light years[1] away based on parallax but is drifting away with a radial velocity of 7 km/s.[4]

1 Trianguli is an ordinary A-type main-sequence star with 2.4 the mass of the Sun and 2.7 times the radius of the Sun.[6] It is radiating at 41 times the luminosity of the Sun[7] from its photosphere an effective temperature of 9,171 K,[8] which gives it a white hue; It is calculated to have formed about 348 million years ago.[9]

References[]

  1. ^ a b c d e 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.
  2. ^ a b Hog, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000-03-01). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
  3. ^ Clausen, J. V.; Jensen, K. S. (1979). "Classification Based on 102/A/Mm Objective Prism Spectra". IAU Colloq. 47: Spectral Classification of the Future. 9: 479. Bibcode:1979RA......9..479C.
  4. ^ a b Gontcharov, G. A. (2006-11-01). "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. ISSN 1063-7737. S2CID 119231169.
  5. ^ Anderson, E.; Francis, Ch. (2012-05-01). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. ISSN 1063-7737. S2CID 119257644.
  6. ^ a b c Stassun, Keivan G.; et al. (2019-10-01). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. hdl:1721.1/124721. ISSN 0004-6256. S2CID 166227927.
  7. ^ a b McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433.
  8. ^ a b c Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevic, G.; Monari, G.; Cantat-Gaudin, T. (2019-08-01). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361. S2CID 131780028.
  9. ^ a b c Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771–782. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. S2CID 118345778.
Retrieved from ""