Iota Ser
HIP 76852; Iota Ser; 21 Ser
DoubleStar
Ser
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
4.52
Spectral Type
A1V
Star Color
White
(B-V 0.04)
Distance
296.5 ly
Position & Identifiers
RA
15h 41m 33.1s
Dec
+19° 40' 13.0"
Constellation
Ser
HR
5842
HIP
76852
Bayer
Iota
Flamsteed
21 Ser
Double Cat
9744
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Visibility
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Multiple Star System
Components
4
Component IDs
AB
Separation
0.2″
Companion Mag
5.2
Companion Sp
A1V
Position Angle
64°
Star Colors
A: White
B: White
Discoverer
HU 580
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.2″ · PA: 64° · N up, E left
Unresolved · 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 5.2 A1V, 5.3 AIV, 11.07y, a = 0.117". AB combined mag., color. Resolved by speckle interferometry 1986.45, | sep. 0.05".
Pleiades group.
0.012" to 0.026".
Survey Image
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