68 Her
Observable Variable Star
Excellent (65/100)
Range: 4.7 - 5.4, Period: 2.1d, Type: EA/SD
HIP 84573; 68 Her
VariableStar
Her
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
4.82
Range
4.7 - 5.4
Period
2.051 days
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
B1.5Vp+B5III
Star Color
Blue
(B-V -0.17)
Distance
362.4 ly
Position & Identifiers
RA
17h 17m 19.5s
Dec
+33° 06' 00.0"
Constellation
Her
HR
6431
HIP
84573
Flamsteed
68 Her
Variable ID
u Her
Double Cat
10449
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Visibility
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Light Curve
Comparison Stars for 68 Her (4.7–5.4)
Nearby stable stars for estimating brightness (AAVSO)
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Multiple Star System
Separation
4.5″
Companion Mag
10.3
Position Angle
56°
Star Colors
A: Blue
Discoverer
STT 328
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 4.5″ · PA: 56° · 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
ADS 10449A, EA 4.69 - 5.37V, 2.0510270d. i 75.9d. Semi-detached system. Polarization measures indicate light from | primary reflected on photosphere of secondary.
Binary.
ADS 10449A, B2.5V, B5V, 2.0510d, K 95.6k/s, V0 -30.0k/s, msin3i 7.16, asini 2.69. Semi-detached system. vsini of | secondary 88k/s.
0.010".
Survey Image
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