HIP 90930 — Double Star in Pavo
Observe
1Physical Properties
Magnitude
5.89
Spectral Type
K0III
giant
Star Color
Orange
(B-V 0.98)
2Position & Identifiers
RA
18h 32m 55.3s
Dec
-73° 57' 56.0"
Constellation
Pavo
(Pav)
HR
6899
HIP
90930
HD
169570
SAO
257601
Querying VizieR catalog...
3How easy to split?
Primary
5.9 mag
Companion
9.9 mag
Separation
0.6″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | V. hard | V. hard | V. hard |
| 150 mm Newton 150mm Newt. | V. hard | V. hard | V. hard |
| Celestron C8 (203 mm SCT) C8 203mm | V. hard | V. hard | V. hard |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
To reach "Medium" at Bortle 3, you'd need at least a 820 mm reflector.
4Visibility
Set a location in User Settings to see visibility data.
Best season
May – Jul
(peak: Jun)
5Multiple Star System
Separation
0.6″
Companion Mag
9.9
Position Angle
81°
Star Colors
A: Orange
Discoverer
HDS2631
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 5.9 · B: 9.9 · Sep: 0.6″ · PA: 81° · N up, E right
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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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
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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