53 Oph
Observable Double Star
Excellent (68/100)
Sep: 40.8", Companion: mag 7.5
HIP 85998; 53 Oph
DoubleStar
Oph
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
5.81
Spectral Type
A2V
Star Color
White
(B-V 0.02)
Position & Identifiers
RA
17h 34m 36.7s
Dec
+09° 35' 12.0"
Constellation
Oph
HR
6548
HIP
85998
Flamsteed
53 Oph
Double Cat
10635
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Multiple Star System
Components
4
Component IDs
AB
Separation
40.8″
Companion Mag
7.5
Position Angle
190°
Star Colors
A: White
B: Yellow
Discoverer
STFA 34
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 40.8″ · PA: 190° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
Querying VizieR for stellar data…
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
Loading HR diagram…
Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Component B, 7.81V, +0.30(B-V), +0.05(U-B), A8IV, vsini 129k/s. Fixed sep. from A.
Survey Image
Loading survey image…