HD 102350

HD 102350
Observationsdata
Epok: J2000.0
StjärnbildKentauren
Rektascension11t 46m 30,82257 s[1]
Deklination-61° 10′ 42,2364 ″[1]
Skenbar magnitud ()+4,11 (V)[2]
Stjärntyp
SpektraltypG0 II[3] eller G5Ib/II[4]
B–V+0,895 ± 0,008[2]
Variabeltypmisstänkt Delta Cephei-variabel[5]
Astrometri
Radialhastighet ()-3,4 ± 0,7[2] km/s
Egenrörelse (µ)RA: -21,87 ± 0,16[1] mas/år
Dek.: -16,41 ± 0,15[1] mas/år
Parallax ()8,37 ± 0,17[1]
Avstånd390 ± 8  (119 ± 2 pc)
Absolut magnitud ()-1,51[6]
Detaljer
Radie21,96+1,70-3,27[7] R
Luminositet282,8 ± 9,0[7] L
Temperatur5 051+424-185[1] K
Andra beteckningar
AKARI-IRC-V1, J1146308-611041, CCDM J11465-6111A, CD-60 3741, CPD-60 3325, FK5 443, HIC 57439, HIP 57439, HR 4522, IRAS 11440-6054, 2MASS J11463084-6110420, NSV 5325, PLX 2726, PPM 358961, SAO 251579, TD1 15854, TYC 8973-2923-1, uvby98 100102350, WDS J11465-6111A, Gaia DR2 5334994490069004672 [8][9]

HD 102350 är en ensam stjärna[10] belägen i den södra delen av stjärnbilden Kentauren. Den har en skenbar magnitud av ca 4,11[2] och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 8,4[1] mas, beräknas den befinna sig på ett avstånd på ca 390 ljusår (ca 119 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca –3,5 km/s.[2]

Egenskaper

HD 102350 är en gul till vit ljusstark jättestjärna av spektralklass G0 II.[3] Den är en misstänkt Delta Cephei-variabel,[3] men fotometri av Hipparcos tyder på att dess ljusstyrka är konstant.[11] Den har en radie som är ca 22[7] solradier och har ca 283 gånger solens utstrålning av energi[7] från dess fotosfär vid en effektiv temperatur av ca 5 100 K.[7]

HD 102350 har en visuell följeslagare av magnitud 13,0 med en vinkelseparation på 24,3 bågsekunder vid en positionsvinkel på 313° i förhållande till den ljusare stjärnan år 2000.[12] Den är listad i Washington Double Star Catalog som att ha en följeslagare av 13:e magnitud med en vinkelseparation av ca 25 bågsekunder,[13] men denna är ett avlägset bakgrundsobjekt som inte är relaterat till HD 102350.[14][10]

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, HD 102350, 24 juni 2021.

Noter

  1. ^ [a b c d e f g] van Leeuwen, F. (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.
  2. ^ [a b c d e] 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.
  3. ^ [a b c] Tetzlaff, N.; et al. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410: 190. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.
  4. ^ Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. 1. Ann Arbor, Michigan: Department of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.
  5. ^ Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085.
  6. ^ Cardini, D. (January 2005). "Mg II chromospheric radiative loss rates in cool active and quiet stars". Astronomy and Astrophysics. 430: 303–311. arXiv:astro-ph/0409683. Bibcode:2005A&A...430..303C. doi:10.1051/0004-6361:20041440.
  7. ^ [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.
  8. ^ HD 102350 (u-strasbg.fr) |Hämtad 2021-06-24
  9. ^ "HD 102350". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 2018-07-27.
  10. ^ [a b] 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.
  11. ^ Adelman, S. J. (2001). "Research Note Hipparcos photometry: The least variable stars". Astronomy and Astrophysics. 367: 297. Bibcode:2001A&A...367..297A. doi:10.1051/0004-6361:20000567.
  12. ^ Mason, B. D.; et al. (2014). "The Washington Visual Double Star Catalog". The Astronomical Journal. 122: 3466–3471. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.
  13. ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466–3471. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.
  14. ^ 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.

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