Pi Lupi — Double Star in Lupus
HIP 73807; Pi Lupi
Fair (33/100)
Observe
1Physical Properties
Magnitude
4.82
Spectral Type
B5IV
subgiant
Distance
362 ly
2Position & Identifiers
RA
15h 05m 07.2s
Dec
-47° 03' 04.0"
Constellation
Lupus
(Lup)
HR
5606
HIP
73807
HD
133243
Bayer
Pi
Querying VizieR catalog...
3How easy to split?
Primary
4.8 mag
Companion
4.6 mag
Separation
1.8″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Hard | Hard | Hard |
| 150 mm Newton 150mm Newt. | Medium | Medium | Medium |
| Celestron C8 (203 mm SCT) C8 203mm | Medium+ | Medium+ | Medium+ |
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
1.8″
Companion Mag
4.6
Position Angle
64°
Star Colors
B: Blue-white
See HR 5605.
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 4.8 · B: 4.6 · Sep: 1.8″ · PA: 64° · N up, E right
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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6
Size Comparison
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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
Discover
14Stellar Notes
Sco-Cen assoc.
15
Light Travel Time Machine
16
Relativistic Travel
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.
Pi Lup
HIP 73807; Pi Lupi
Tight double — a rewarding split at 1.6″
Double Star
mag 4.72
0.0°
Lupus
Kappa Lup
HIP 74376; Kappa1 Lupi
Easy double, sep 26.3″
Double Star
mag 3.87
2.0°
Lupus
Kappa Lup
HIP 74380; Kappa2 Lupi
Easy double, sep 26.6″
Double Star
mag 5.69
2.0°
Lupus
NGC 5670
Bright spiral galaxy
Galaxy
mag 11.96
5.2°
Lupus
NGC 5927
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 8.3
5.2°
Lupus
GG Lup
Eclipsing binary, period 1.8d
Variable Star
mag 5.59
6.7°
Lupus
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