Unukalhai
HIP 77070; Alpha Ser; 24 Ser
HIP 77070; Alpha Ser; 24 Ser
DoubleStar
Ser
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
2.65
Spectral Type
K2III
Star Color
Red
(B-V 1.17)
Distance
74.0 ly
Position & Identifiers
RA
15h 44m 16.1s
Dec
+06° 25' 32.0"
Constellation
Ser
HR
5854
HIP
77070
Bayer
Alpha
Flamsteed
24 Ser
Double Cat
9765
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
57.9″
Companion Mag
11.8
Position Angle
332°
Star Colors
A: Red
Discoverer
HJ 1277
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 57.9″ · PA: 332° · 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
SR? Amp. 0.2V. ADS 9765B, optical.
UNUKALHAI; Unuk al Hay; Unuk Elhaia; Unuk; Unukalhay; Cor Serpentis.
Survey Image
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