Epsilon Coronae Australis — Star in Corona Australis
Observe
1Physical Properties
Magnitude
4.87
Range
4.74 - 5.00
Period
14.2 hours
Variable Type
Eclipsing Binary (W UMa-type)
Spectral Type
F2V
Star Color
Yellow-white
(B-V 0.41)
Distance
102 ly
2Position & Identifiers
RA
18h 58m 43.4s
Dec
-37° 06' 27.0"
Constellation
Corona Australis
(CrA)
HR
7152
HIP
93174
HD
175813
SAO
210781
Bayer
Epsilon
Variable ID
Eps CrA
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium+ | Medium | Hard+ |
| 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
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Best season
May – Jul
(peak: Jun)
5Survey Image
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Explore
6
Size Comparison
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7
Compare Stars
8
Spectral Classification
9
Hertzsprung-Russell Diagram
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10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
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14Stellar Notes
EW 4.74 - 5.00V, 0.5914264d.
0.5914d, K 25.7k/s, V0 +61.9k/s, asini 0.209.
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.
NGC 6723
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 7.3
0.5°
Sagittarius
C68
NGC 6729
Diffuse nebula
Diffuse Nebula
mag 10.0
0.7°
Corona Australis
Gamma CrA
HIP 93825; Gamma Coronae Australis
Tight double — a rewarding split at 1.6″
Double Star
mag 4.93
1.5°
Corona Australis
NGC 6768
Elliptical galaxy
Galaxy
mag 12.85
4.7°
Corona Australis
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Article
Corona Australis
Mythology, bright stars, and deep-sky highlights.
Constellation
