Delta Gru
HIP 111043; Delta2 Gru
HIP 111043; Delta2 Gru
DoubleStar
Gru
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.11
Variable Type
Slow Irregular Variable
Spectral Type
M4.5IIIa
Star Color
Red
(B-V 1.57)
Position & Identifiers
RA
22h 29m 45.5s
Dec
-43° 44' 58.0"
Constellation
Gru
HR
8560
HIP
111043
Bayer
Delta2
Variable ID
Del2 Gru
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Visibility
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Multiple Star System
Separation
60.7″
Companion Mag
9.7
Position Angle
211°
Star Colors
A: Red
Discoverer
DUN 239
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 60.7″ · PA: 211° · 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
Lb? 3.99 - 4.20V.
Companion optical. B-V for combined light +1.57.
Survey Image
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