HIP 90887 — Star in Corona Australis
Observe
1Physical Properties
Magnitude
5.16
Spectral Type
A3Vn
Star Color
White
(B-V 0.08)
Distance
148 ly
2Position & Identifiers
RA
18h 32m 21.4s
Dec
-39° 42' 14.0"
Constellation
Corona Australis
(CrA)
HR
6942
HIP
90887
HD
170642
SAO
210277
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3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium | Hard+ | 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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Spectral Classification
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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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Light Travel Time Machine
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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.
Kappa CrA
HIP 90968; Kappa2 Coronae Australis
Easy double, sep 20.5″
Double Star
mag 5.65
1.0°
Corona Australis
C78
NGC 6541
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 6.6
6.0°
Corona Australis
RS Sgr
Eclipsing binary, period 2.4d
Variable Star
mag 6.16
6.3°
Sagittarius
C68
NGC 6729
Diffuse nebula
Diffuse Nebula
mag 10.0
6.4°
Corona Australis
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