HIP 105091
HIP 105091
DoubleStar
Cep
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
6.42
Variable Type
Ellipsoidal Variable
Spectral Type
B2IIIe
Star Color
Yellow-white
(B-V 0.20)
Position & Identifiers
RA
21h 17m 18.8s
Dec
+58° 36' 42.0"
Constellation
Cep
HR
8153
HIP
105091
Double Cat
14832
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
4.2″
Companion Mag
12.0
Position Angle
274°
Star Colors
A: Yellow-white
Discoverer
BU 1140
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 4.2″ · PA: 274° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Ell?, 6.40 - 6.44V, 5.4d?
AB fixed.
ADS 14832A, spectroscopic triple system. 225.44d, K 21.9k/s, V0 -6.1k/s, asini 66.1, and 5.4136d, K 40.0k/s, V0 | -11.1k/s, asini 2.96.
Cep OB2; immersed in faint reflection nebula Ced. 191.
Shell star. H alpha in emission.
Survey Image
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