Omicron Cephei

**ο Cephei**
Data pengamatan Epoch J2000.0 Equinox J2000.0 (ICRS)
Rasi bintang	Cepheus
Komponen	A	B
Asensio rekta	23^j 18^m	23^j 18^m
	37.493^s	37.115^s
Deklinasi	+68° 06′^[1]	+68° 06′^[2]
	41.20″	38.65″
Magnitudo semu (V)	4.86^[3]	7.13^[3]
Karakteristik
Klasifikasi bintang	G8III^[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 (μ_α cos δ)	54.88^[1] m.b/thn	45.70^[2] m.b/thn
Dec. (μ_δ)	10.91^[1]&nbspm.b/thn	13.19^[2]&nbspm.b/thn
Paralaks (π)	15.48 ± 0.55^[5] m.b
Jarak	211 ± 7 tc (65 ± 2 pc)
Magnitudo mutlak (M_V)	0.8^{[note 1]}	3.1^{[note 1]}
Details
Massa	2.35 ± 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
SIMBAD	data
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 2 Dari Magnitudo semu dan paralaks.

Referensi

Portal Astronomi

1 2 3 Component 1, HIP 115088, database entry, The Hipparcos and Tycho Catalogues, 1997, CDS ID I/239.
1 2 3 Component 2, HIP 115088, database entry, The Hipparcos and Tycho Catalogues, 1997, CDS ID I/239.
1 2 3 4 5 6 7 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.
1 2 3 4 5 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.
1 2 3 CCDM J23186+6807AB -- Double or multiple star, database entry, SIMBAD. Accessed on line November 24, 2008.
↑ 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.