Xi Lupi — Double Star in Lupus
HIP 78106; Xi Lupi
Excellent (67/100)
Observe
1Physical Properties
Magnitude
5.62
Spectral Type
B9V
Star Color
Blue-white
(B-V 0.05)
Distance
130 ly
2Position & Identifiers
RA
15h 56m 54.2s
Dec
-33° 57' 51.0"
Constellation
Lupus
(Lup)
HR
5926
HIP
78106
HD
142630
SAO
207145
Bayer
Xi
Querying VizieR catalog...
3How easy to split?
Primary
5.6 mag
Companion
5.6 mag
Separation
10.3″
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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
10.3″
Companion Mag
5.6
Position Angle
50°
Star Colors
A: Blue-white
B: White
Binary with HR 5925.
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 5.6 · B: 5.6 · Sep: 10.3″ · PA: 50° · N up, E right
Resolved · 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
Also classified A1V(n).
0.018".
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.
Xi Lup
HIP 78105; Xi Lupi
Easy double, sep 10.2″
Double Star
mag 5.12
0.0°
Lupus
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mag 7.1
4.4°
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Eta Lup
Colorful double, sep 14.8″
Double Star
mag 3.41
4.5°
Lupus
V856 Sco
Variable star, range 7.0–7.7
Variable Star
mag 7.05
5.6°
Scorpius
12 Sco
Easy double, sep 3.8″
Double Star
mag 5.67
6.4°
Scorpius
2 Sco
Tight double — a rewarding split at 2.0″
Double Star
mag 4.59
8.7°
Scorpius
NGC 6124
Rich open cluster
Open Cluster
mag 5.8
8.8°
Scorpius
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