Xi Herculis — Star in Hercules
Observe
1Physical Properties
Magnitude
3.70
Spectral Type
G8.5III
giant
Star Color
Orange
(B-V 0.94)
Distance
137 ly
2Position & Identifiers
RA
17h 57m 45.9s
Dec
+29° 14' 52.0"
Constellation
Hercules
(Her)
HR
6703
HIP
87933
HD
163993
SAO
85590
Bayer
Xi
Flamsteed
92 Her
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Easy | Medium+ | Medium+ |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
May – Jul
(peak: Jun)
5Survey Image
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Explore
7
Size Comparison
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8
Compare Stars
9
Spectral Classification
10
Hertzsprung-Russell Diagram
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11
Stellar Lifecycle
12
Blackbody Spectrum
13
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
Discover
15
Light Travel Time Machine
16
Relativistic Travel
Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
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Article
Hercules
Mythology, bright stars, and deep-sky highlights.
Constellation
