Rho Oph
HIP 80473; Rho Oph; 5 Oph
Observable Double Star
Excellent (72/100)
Sep: 3.2", Companion: mag 5.7
HIP 80473; Rho Oph; 5 Oph
DoubleStar
Oph
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.02
Spectral Type
B2IV
Star Color
Yellow-white
(B-V 0.24)
Distance
250.9 ly
Position & Identifiers
RA
16h 25m 35.2s
Dec
-23° 26' 50.0"
Constellation
Oph
HR
6112
HIP
80473
Bayer
Rho
Flamsteed
5 Oph
Double Cat
10049
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Visibility
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Multiple Star System
Components
5
Component IDs
AB
Separation
3.2″
Companion Mag
5.7
Companion Sp
B2V
Position Angle
335°
Star Colors
A: Yellow-white
B: Blue
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 3.2″ · PA: 335° · 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 with HR 6113, combined colors. Combined mag. 4.63V. Component C, CoD-23d12862, 7.13v, B9n, 152" CPM, | vsini 180k/s; D, 6.56 B3V at 156", vsini 167k/s. E, 8.1v, 0.6" from D. DE is ADS 10045.
Sco OB2; upper Sco region; in reflection nebula; assoc. Sco R1; IC 4604.
Sp. shows interstellar K1 line at 4044A. Interstellar SO emission features.
Rapidly rotating star, candidate for becoming a Be star.
Survey Image
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