HIP 65936 — Double Star in Centaurus
Observe
1Physical Properties
Magnitude
3.88
Spectral Type
G8 II/III
bright giant
Star Color
Orange
(B-V 1.17)
(reddened by dust)
Distance
886 ly
2Position & Identifiers
RA
13h 31m 02.7s
Dec
-39° 24' 27.0"
Constellation
Centaurus
(Cen)
HR
5089
HIP
65936
HD
117440
SAO
204545
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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
Mar – May
(peak: Apr)
5Multiple Star System
Separation
0.1″
Companion Mag
5.0
Position Angle
26°
Star Colors
A: Orange
(reddened by dust)
Discoverer
SEE 179
4.5 G8III, 4.7 G9III, 78.7y, a = 0.165". Combined mag., colors.
Separation over time
Period: 83.1 y
Eccentricity: 0.521
Now: 0.14", PA 14°
-0.02" in 5 years
Apparent separation over time, computed from ORB6 orbital elements. Steep curves indicate fast-changing pairs — catch them while they're splittable.
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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
15Stellar Notes
Luminosity classes discordant: G8III and G9Ib.
0.004".
16
Light Travel Time Machine
17
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 5102
Elliptical galaxy
Galaxy
mag 9.7
3.3°
Centaurus
T Cen
Mira-type variable, range 5.5–9.0
Variable Star
mag 6.05
6.2°
Centaurus
Chi Cen
Colorful double, sep 85.2″
Double Star
mag 4.36
6.9°
Centaurus
3 Cen
Easy double, sep 7.8″
Double Star
mag 4.56
7.7°
Centaurus
NGC 5139
omega Cen
Large bright globular cluster
Globular Cluster
mag 3.7
8.1°
Centaurus
4 Cen
Colorful double, sep 14.8″
Double Star
mag 4.73
8.7°
Centaurus
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