HIP 72683 — Double Star in Lupus
Observe
1Physical Properties
Magnitude
4.32
Spectral Type
B5IV
subgiant
Star Color
Blue-white
(B-V -0.15)
2Position & Identifiers
RA
14h 51m 38.4s
Dec
-43° 34' 32.0"
Constellation
Lupus
(Lup)
HR
5528
HIP
72683
HD
130807
SAO
225248
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3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium+ | Medium+ | Medium |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
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Best season
Mar – May
(peak: Apr)
5Multiple Star System
Separation
0.1″
Companion Mag
4.8
Position Angle
268°
Star Colors
A: Blue-white
Discoverer
FIN 319
Binary.
Separation over time
Period: 10.9 y
Eccentricity: 0.801
Now: 0.15", PA 286°
-0.14" in 5 years
Apparent separation over time, computed from ORB6 orbital elements. Steep curves indicate fast-changing pairs — catch them while they're splittable.
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7
Size Comparison
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9
Spectral Classification
10
Hertzsprung-Russell Diagram
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11
Stellar Lifecycle
12
Blackbody Spectrum
13
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
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15Stellar Notes
Sco-Cen assoc.; certain member of the Sco-Cen cluster; upper Cen group of Sco-Cen assoc.; member of Pleiades group.
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.
Beta Lup
Hot blue O-type star
Star
mag 2.68
1.3°
Lupus
IC 4441
Bright spiral galaxy
Galaxy
mag 11.84
3.6°
Lupus
Pi Lup
HIP 73807; Pi Lupi
Tight double — a rewarding split at 1.6″
Double Star
mag 4.72
4.2°
Lupus
Pi Lup
HIP 73807; Pi Lupi
Tight double — a rewarding split at 1.8″
Double Star
mag 4.82
4.2°
Lupus
GG Lup
Eclipsing binary, period 1.8d
Variable Star
mag 5.59
5.8°
Lupus
NGC 5460
Rich open cluster
Open Cluster
mag 5.6
9.0°
Centaurus
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