Rho Ori
Observable Double Star
Good (58/100)
Sep: 6.9", Companion: mag 8.5
HIP 24331; Rho Ori; 17 Ori
DoubleStar
Ori
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.46
Spectral Type
K0.5III
Star Color
Red
(B-V 1.19)
Position & Identifiers
RA
05h 13m 17.5s
Dec
+02° 51' 40.0"
Constellation
Ori
HR
1698
HIP
24331
Bayer
Rho
Flamsteed
17 Ori
Double Cat
3797
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
6.9″
Companion Mag
8.5
Position Angle
64°
Star Colors
A: Red
Discoverer
STF 654
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 6.9″ · PA: 64° · 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
AB fixed. B, 8.4v, F7V at 7"; C, 11.8 at 182".
ADS 3797A, 1031.40d, K 8.7k/s, V0 +40.5k/s, asini 123. Unresolved by speckle interferometry.
Also classified K0.5III.
0.001".
Survey Image
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