Zuben El Akribi
HIP 73473; Delta Librae; 19 Librae
Excellent (70/100)
Observe
1Physical Properties
Magnitude
4.92
Range
4.9 - 5.9
Period
2.3 days
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
B9.5V
Star Color
White
(B-V 0.00)
Distance
163 ly
Position & Identifiers
RA
15h 00m 58.4s
Dec
-08° 31' 08.0"
Constellation
Libra
(Lib)
HR
5586
HIP
73473
HD
132742
Bayer
Delta
Flamsteed
19 Lib
Variable ID
Del Lib
Querying VizieR catalog...
2Visibility
Set a location in User Settings to see visibility data.
Best season
Apr – Jun
(peak: May)
3How easy to follow?
Sign in
and configure your equipment and default location to see a personalized row.
| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Hard | V. hard+ | V. hard+ |
| 50 mm finder 50mm finder | Medium+ | Medium+ | Medium+ |
| 150 mm telescope 150mm scope | Medium+ | Medium+ | Medium+ |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Light Curve
5Comparison Stars for Zuben El Akribi (4.9–5.9)
Nearby stable stars for estimating brightness (AAVSO)
Loading comparison stars…
Explore
6
Size Comparison
Querying VizieR for stellar data…
7
Compare Stars
8
Stellar Lifecycle
9
Spectral Classification
10
Hertzsprung-Russell Diagram
Loading HR diagram…
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
EA 4.92 - 5.90V, 2.32735297d, period may vary. Component A of quadruple system. Contact binary.
2.3273d, K 78.3k/s, V0 -36.4k/s, asini 2.50. Orbital period variable. Masses 2.6, 1.1 solar.
Zuben Elakribi.
15
Light Travel Time Machine
16
Relativistic Travel
Survey Image
Loading survey image…
