Omicron Cephei

ο Cephei
Data pengamatan
Epoch J2000.0      Equinox J2000.0 (ICRS)
Rasi bintangCepheus
KomponenAB
Asensio rekta 23j 18m 23j 18m
 37.493s37.115s
Deklinasi +68° 06′[1] +68° 06′[2]
 41.20″38.65″
Magnitudo semu (V)4.86[3]7.13[3]
Karakteristik
Klasifikasi bintangG8III[4]F6V[3]
U-B Indeks warna+0.49[3]
B-V Indeks warna+0.84[3]
R-I Indeks warna+0.45[3]
Astrometri
Gerak diri: 
RA (μα cos δ) 54.88[1] m.b/thn 45.70[2] m.b/thn 
Dec. (μδ) 10.91[1]&nbspm.b/thn 13.19[2]&nbspm.b/thn 
Paralaks (π)15.48 ± 0.55[5] m.b
Jarak211 ± 7 tc
(65 ± 2 pc)
Magnitudo mutlak (MV)0.8[note 1]3.1[note 1]
Details
Massa2.35 ± 0.15[4] M☉1.29[4] M☉
Orbit[4]
Periode (P)1505 ± 40 y
Sumbu semi-mayor (a)3.13 ± 0.12″
Eksentrisitas (e)0.439 ± 0.020
Inklinasi (i)16.0 ± 4.0°
Bujur node menaik (Ω)4.5 ± 4.5°
Periastron epos (T)B1692 ± 20
Argumen periastron (ω)
(secondary)		93.0 ± 20.0°
Referensi Database
SIMBADdata
Nama lain
ο Cep, Omicron Cephei, Omicron Cep, 34 Cephei, 34 Cep, STF 3001AB, ADS 16666 AB, BD+67°1514, CCDM J23186+6807AB, GC 32463, GSC 04478-01361, HD 219916, HIP 115088, HR 8872, IDS 23145+6734 AB, PPM 24360, SAO 20554, WDS 23186+6807AB.[5][6]

Omicron Cephei (Omicron Cep, ο Cephei, ο Cep) adalah bintang biner yang terletak di rasi bintang Cepheus.[5] Terdiri dari bintang dengan klasifikasi tipe K (bintang berukuran kecil) pada orbit dengan bintang raksasa (tipe G).[4] [[Magnitudo semunya secara umum 4.75.[3]

Catatan

  1. ^ a b Dari Magnitudo semu dan paralaks.

Referensi

  1. ^ a b c Component 1, HIP 115088, database entry, The Hipparcos and Tycho Catalogues, 1997, CDS ID I/239.
  2. ^ a b c Component 2, HIP 115088, database entry, The Hipparcos and Tycho Catalogues, 1997, CDS ID I/239.
  3. ^ a b c d e f g HR 8872, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 24, 2008.
  4. ^ a b c d e Orbit and System Mass for the Visual Binary WDS 23186+6807AB, José A. Docobo, Vakhtang S. Tamazian, Manuel Andrade, and Norik D. Melikian, Astronomical Journal 126, #3 (September 2003), pp. 1522–1525, Bibcode: 2003AJ....126.1522D, DOI:10.1086/377319.
  5. ^ a b c CCDM J23186+6807AB -- Double or multiple star, database entry, SIMBAD. Accessed on line November 24, 2008.
  6. ^ Entry 23186+6807, The Washington Double Star Catalog Diarsipkan 2009-01-31 di Wayback Machine., United States Naval Observatory. Accessed on line November 24, 2008.

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