Upsilon Aquarii — Double Star in Aquarius
Observe
1Physical Properties
Magnitude
5.20
Spectral Type
F4IV
subgiant
Star Color
Yellow-white
(B-V 0.44)
Distance
71 ly
2Position & Identifiers
RA
22h 34m 41.6s
Dec
-20° 42' 30.0"
Constellation
Aquarius
(Aqr)
HR
8592
HIP
111449
HD
213845
SAO
191235
Bayer
Upsilon
Flamsteed
59 Aqr
Querying VizieR catalog...
3How easy to split?
Primary
5.2 mag
Companion
9.5 mag
Separation
6.1″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Hard+ | Hard+ | Hard+ |
| 150 mm Newton 150mm Newt. | Easy | Easy | Easy |
| Celestron C8 (203 mm SCT) C8 203mm | 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
Jul – Sep
(peak: Aug)
5Multiple Star System
Separation
6.1″
Companion Mag
9.5
Position Angle
128°
Star Colors
A: Yellow-white
B: Orange
Discoverer
LAF 69
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 5.2 · B: 9.5 · Sep: 6.1″ · PA: 128° · N up, E right
Resolved · 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
Discover
14
Light Travel Time Machine
15
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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