Iota Her
HIP 86414; Iota Her; 85 Her
DoubleStar
Her
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.80
Range
3.80 - 3.82
Period
3.5 days
Variable Type
Slowly Pulsating B Star
Spectral Type
B3IV
Star Color
Blue
(B-V -0.18)
Distance
455 ly
Position & Identifiers
RA
17h 39m 27.9s
Dec
+46° 00' 23.0"
Constellation
Her
HR
6588
HIP
86414
Bayer
Iota
Flamsteed
85 Her
Variable ID
Iot Her
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Visibility
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Light Curve
Multiple Star System B: optical
Separation
117.2″
Companion Mag
11.8
Position Angle
48°
Star Colors
A: Blue
Discoverer
BU 1459
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 117.2″ · PA: 48° · 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 Fusion
Stellar Notes
Beta C?, amp. 0.01V.
113.804d, K 5.4 k/s, V0 -20.0 k/s, asini 7.629. RV also var. 0.1434d.
Color excess E(B-V) = -0.02.
Survey Image
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