OP Her
Good (58/100)
HIP 87850
VariableStar
Her
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
6.02
Range
5.85 - 6.73
Period
120 days
Variable Type
Semi-Regular Variable (Late-type Giant)
Spectral Type
M5IIbS
Star Color
Red
(B-V 1.64)
Position & Identifiers
RA
17h 56m 48.4s
Dec
+45° 21' 03.0"
Constellation
Her
HR
6702
HIP
87850
Variable ID
OP Her
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Visibility
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Light Curve
Comparison Stars for OP Her (5.8–6.7)
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 5.85 - 6.73V, 7.7 - 8.3p, 120.5d.
Technetium star.
Survey Image
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