Pi Sculptoris

Pi Sculptoris (π)
Observationsdata
Epok: J2000.0
StjärnbildBildhuggaren
Rektascension01t 42m 08,59623s[1]
Deklination-32° 29′ 37,1331″[1]
Skenbar magnitud ()+5,25[2]
Stjärntyp
SpektraltypK1 II/III[3]
U–B+0,79[4]
B–V+1,05[4]
Astrometri
Radialhastighet ()+10,40[5] km/s
Egenrörelse (µ)RA: -71,07[1] mas/år
Dek.: -51,06[1] mas/år
Parallax ()15,18 ± 0,70[1]
Avstånd215 ± 10  (66 ± 3 pc)
Absolut magnitud ()+1,16[2]
Detaljer
Massa1,52[6] M
Radie9,3[7] R
Luminositet43,42[2] L
Temperatur4 707[6] K
Metallicitet-0,22[6] dex
Vinkelhastighet<1,6[8] km/s
Andra beteckningar
CD-32° 666, FK5 1048, GC 2085, GSC 07003-02207, HIP 7955, HR 497, HD 10537, SAO 193263

Pi Sculptoris (π Sculptoris, förkortat Pi Scl, π Scl) som är stjärnans Bayerbeteckning, är en ensam stjärna belägen i den östra delen av stjärnbilden Bildhuggaren. Den har en skenbar magnitud på 5,25[2] och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 15,2[1] mas, beräknas den befinna sig på ett avstånd på ca 215 ljusår (ca 66 parsek) från solen.

Egenskaper

Pi Sculptoris är en orange till röd ljusstark jättestjärna av spektralklass K1 II/III[3]. Den har en massa som är drygt 50[6] procent större än solens massa, en radie som är ca 9[7] gånger större än solens och utsänder från dess fotosfär ca 43[2] gånger mera energi än solen vid en effektiv temperatur på ca 4 700[6] K.

Källor

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, tidigare version.

Referenser

  1. ^ [a b c d e f] Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  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. Vizier catalog entry
  3. ^ [a b] Houk, N. (1982). "Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40_ƒ0 to -26_ƒ0". Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40_ƒ0 to -26_ƒ0. Bibcode:1982MSS...C03....0H.
  4. ^ [a b] Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
  5. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053 . Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  6. ^ [a b c d e] Liu, Y. J.; Zhao, G.; Shi, J. R.; Pietrzynski, G.; Gieren, W. (2007). "The abundances of nearby red clump giants". Monthly Notices of the Royal Astronomical Society. 382 (2): 553. Bibcode:2007MNRAS.382..553L. doi:10.1111/j.1365-2966.2007.11852.x.
  7. ^ [a b] Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555. arXiv:astro-ph/9911002 . Bibcode:1999A&A...352..555A. Vizier catalog entry
  8. ^ ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474 . Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. Vizier catalog entry

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