Observe
1Physical Properties
Magnitude
5.15
Spectral Type
F4IV
Star Color
Yellow-white
(B-V 0.41)
Distance
65 ly
2Position & Identifiers
RA
14h 50m 41.2s
Dec
-15° 59' 50.0"
Constellation
Libra
(Lib)
HR
5530
HIP
72603
HD
130819
Bayer
Alpha1
Flamsteed
8 Lib
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium | Hard+ | Hard |
| 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)
Explore
5
Size Comparison
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6
Compare Stars
7
Spectral Classification
8
Hertzsprung-Russell Diagram
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9
Stellar Lifecycle
10
Blackbody Spectrum
11
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
12
Stellar Fusion
Discover
13Stellar Notes
CPM with HR 5531 at 231". Component A, HR 5531, is the suspected occultation double, 3.4, 3.8, sep. 0.01".
14
Light Travel Time Machine
15
Relativistic Travel
Survey Image
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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.
Zuben Elgenubi
HIP 72622; Alpha2 Librae; 9 Librae
Easy double, sep 230.8″
Double Star
mag 2.75
0.1°
Libra
Zuben El Akribi
HIP 73473; Delta Librae; 19 Librae
Eclipsing binary, period 2.3d
Variable Star
mag 4.92
7.9°
Libra
NGC 5915
Barred spiral galaxy
Galaxy
mag 12.0
8.0°
Libra
NGC 5897
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 8.6
8.1°
Libra
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