Lompat ke isi

HD 20468

Dari Wikipedia bahasa Indonesia, ensiklopedia bebas
HD 20468

Lokasi HD 20468 (dilingkari)
Data pengamatan
Epos J2000      Ekuinoks J2000
Rasi bintang Perseus
Asensio rekta  03j 18m 43.82583d[1]
Deklinasi  34° 13′ 21.5473″[1]
Magnitudo tampak (V) 4.82[2]
Ciri-ciri
Kelas spektrum K2IICN1[3]
Indeks warna U−B +1.55[2]
Indeks warna B−V +1.49[2]
Astrometri
Kecepatan radial (Rv)+1.80[4] km/detik
Gerak diri (Ο) RA: +2.75[1] mdb/thn
Dek.: -8.87[1] mdb/thn
Paralaks (π)2,77±0,23[1] mdb
Jarak1.180 ¹ 100 tc
(360 ¹ 30 pc)
Magnitudo mutlak (MV)-2.92[5]
Detail
Massa7.0[6] M☉
Luminositas3512[7] L☉
Gravitasi permukaan (log g)1.09[8]
Suhu4,369[8] K
Metalisitas [Fe/H]+0.03[8]
Kecepatan rotasi (v sin i)5.9[9] km/detik
Penamaan lain
BD+33°619, FK5 2232, GC 3948, HIP 15416, HR 991, HD 20468, SAO 56340
Referensi basis data
SIMBADdata

HD 20468 adalah bintang raksasa terang oranye dengan kelas spektrum K2II[3] di rasi bintang Perseus. Magnitudo semunya adalah 4,82[2] dan bintang ini berjarak sekitar 1.180 tahun cahaya berdasarkan paralaksnya.[1]

Referensi

[sunting | sunting sumber]
  1. 1 2 3 4 5 6 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. S2CID 18759600. Entri katalog Vizier
  2. 1 2 3 4 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. 1 2 Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
  4. ↑ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data". Astronomy & Astrophysics. 430: 165–186. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID 17804304.
  5. ↑ 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. S2CID 119257644. Entri katalog Vizier
  6. ↑ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873. Entri katalog Vizier
  7. ↑ Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349. arXiv:1003.2335. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. S2CID 111387483. Entri katalog Vizier
  8. 1 2 3 Earle Luck, R. (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
  9. ↑ De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph/0608248. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. Entri katalog Vizier