70 Oph
Observable Double Star
Excellent (61/100)
Sep: 6.8", Companion: mag 6.2
HIP 88601; 70 Oph
DoubleStar
Oph
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.03
Spectral Type
K0V
Star Color
Orange
(B-V 0.86)
Distance
16.2 ly
Position & Identifiers
RA
18h 05m 27.3s
Dec
+02° 29' 58.0"
Constellation
Oph
HR
6752
HIP
88601
Flamsteed
70 Oph
Double Cat
11046
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Visibility
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Multiple Star System
Components
11
Component IDs
AB
Separation
6.8″
Companion Mag
6.2
Companion Sp
K4V
Position Angle
118°
Star Colors
A: Orange
B: Orange
Discoverer
STF2272
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 6.8″ · PA: 118° · 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 4.20 K0V, 5.99 K4V, 88.13y, a = 4.545". B is 6.00V, +1.15(B-V), vsini =<25k/s. Aitken listed 9 additional faint | companions within 180".
ADS 11046AB, 88.13y D, K 3.4k/s, V0 -7.1k/s, asini 1300.
0.198".
Survey Image
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