Kappa Lupi — Double Star in Lupus
HIP 74380; Kappa2 Lupi
Excellent (65/100)
Observe
1Physical Properties
Magnitude
5.69
Spectral Type
A3IV
subgiant
Star Color
White
(B-V 0.14)
2Position & Identifiers
RA
15h 11m 57.6s
Dec
-48° 44' 37.0"
Constellation
Lupus
(Lup)
HR
5647
HIP
74380
HD
134482
SAO
225526
Bayer
Kappa2
Querying VizieR catalog...
3How easy to split?
Primary
5.7 mag
Companion
5.5 mag
Separation
26.6″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Easy | Easy | Easy |
| 150 mm Newton 150mm Newt. | Easy | Easy | Easy |
| Celestron C8 (203 mm SCT) C8 203mm | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
Apr – Jun
(peak: May)
5Multiple Star System
Separation
26.6″
Companion Mag
5.5
Position Angle
143°
Star Colors
A: White
B: Blue-white
See HR 5646.
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 5.7 · B: 5.5 · Sep: 26.6″ · PA: 143° · N up, E right
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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6
Size Comparison
Querying VizieR for stellar data…
7
Compare Stars
8
Spectral Classification
9
Hertzsprung-Russell Diagram
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10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
Kappa Lup
HIP 74376; Kappa1 Lupi
Easy double, sep 26.3″
Double Star
mag 3.87
0.0°
Lupus
Pi Lup
HIP 73807; Pi Lupi
Tight double — a rewarding split at 1.6″
Double Star
mag 4.72
2.0°
Lupus
Pi Lup
HIP 73807; Pi Lupi
Tight double — a rewarding split at 1.8″
Double Star
mag 4.82
2.0°
Lupus
NGC 5927
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 8.3
3.2°
Lupus
Zeta Lup
Easy double, sep 71.7″
Double Star
mag 3.41
3.4°
Lupus
NGC 5822
Open cluster
Open Cluster
mag 7.0
5.8°
Lupus
NGC 5670
Bright spiral galaxy
Galaxy
mag 11.96
6.7°
Lupus
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