Sigma And
HIP 1473; Sigma And; 25 And
DoubleStar
And
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
4.52
Variable Type
Delta Scuti (Pulsating)
Spectral Type
A2V
Star Color
White
(B-V 0.05)
Distance
141.8 ly
Position & Identifiers
RA
00h 18m 19.7s
Dec
+36° 47' 07.0"
Constellation
And
HR
68
HIP
1473
Bayer
Sigma
Flamsteed
25 And
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Visibility
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Multiple Star System
Separation
7.0″
Companion Mag
11.4
Position Angle
146°
Star Colors
A: White
Discoverer
DRS 33
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 7.0″ · PA: 146° · 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
Delta Sct?, 4.49 - 4.55V.
Sirius group; UMa stream.
Survey Image
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