Eta Lup
Observable Double Star
Excellent (62/100)
Sep: 14.8", Companion: mag 7.5
HIP 78384; Eta Lup
DoubleStar
Lup
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
3.41
Spectral Type
B2.5 IV
Star Color
Blue
(B-V -0.22)
Distance
441.6 ly
Position & Identifiers
RA
16h 00m 07.3s
Dec
-38° 23' 49.0"
Constellation
Lup
HR
5948
HIP
78384
Bayer
Eta
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
14.8″
Companion Mag
7.5
Position Angle
19°
Star Colors
A: Blue
B: Yellow-white
Discoverer
RMK 21
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 14.8″ · PA: 19° · 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
AB binary. Companion A5Vp.
Sco-Cen cluster; member of the local association (Pleiades group).
Comp. B, +7k/s.
Survey Image
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