HIP 21756
HIP 21756
DoubleStar
Dor
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
6.53
Spectral Type
G5V
Star Color
Orange
(B-V 0.68)
Distance
51.0 ly
Position & Identifiers
RA
04h 40m 18.3s
Dec
-58° 56' 37.0"
Constellation
Dor
HR
1504
HIP
21756
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Visibility
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Multiple Star System
Separation
3.8″
Companion Mag
7.5
Position Angle
90°
Star Colors
A: Orange
B: Orange
Discoverer
HJ 3683
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 3.8″ · PA: 90° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
7.2 G5V, 7.3 G6V, 552.30y, a = 3.164". Combined mag., colors. Both components also classified G3V.
0.038".
Survey Image
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