Epsilon Oct
Excellent (65/100)
HIP 110256; Epsilon Oct
VariableStar
Oct
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
5.10
Range
4.58 - 5.30
Period
55 days
Variable Type
Semi-Regular Variable (Late-type Giant)
Spectral Type
M5III
Star Color
Red
(B-V 1.47)
Position & Identifiers
RA
22h 20m 01.5s
Dec
-80° 26' 23.0"
Constellation
Oct
HR
8481
HIP
110256
Bayer
Epsilon
Variable ID
Eps Oct
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Visibility
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Light Curve
Comparison Stars for Epsilon Oct (4.6–5.3)
Nearby stable stars for estimating brightness (AAVSO)
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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 Fusion
Stellar Notes
SRb 4.58 - 5.30V, about 55d. Also called BO Oct.
Zeta Her group.
Survey Image
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