2 Com
Observable Double Star
Good (51/100)
Sep: 3.7", Companion: mag 7.5
HIP 58858; 2 Com
DoubleStar
Com
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
5.87
Spectral Type
F0IV-V
Star Color
Yellow-white
(B-V 0.22)
Distance
652.3 ly
Position & Identifiers
RA
12h 04m 16.6s
Dec
+21° 27' 33.0"
Constellation
Com
HR
4602
HIP
58858
Flamsteed
2 Com
Double Cat
8406
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Visibility
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Multiple Star System
Separation
3.7″
Companion Mag
7.5
Position Angle
234°
Star Colors
A: Yellow-white
B: Yellow
Discoverer
STF1596
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 3.7″ · PA: 234° · 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
Binary. Companion A9V. vsini both components =<50k/s.
ADS 8406B, +8k/s.
Survey Image
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