23 Oph
HIP 82730; 23 Oph
DoubleStar
Ophiuchus
(Oph)
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
5.25
Spectral Type
K2III
Star Color
Orange
(B-V 1.08)
Distance
155 ly
Position & Identifiers
RA
16h 54m 35.7s
Dec
-06° 09' 14.0"
Constellation
Ophiuchus
(Oph)
HR
6280
HIP
82730
Flamsteed
23 Oph
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Visibility
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Multiple Star System
Separation
0.5″
Companion Mag
9.9
Position Angle
264°
Star Colors
A: Orange
Discoverer
DSG 1
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.5″ · PA: 264° · N up, E left
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
Size Comparison
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Spectral Classification
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