Libertas — Star in Aquila
HIP 97938; Xi Aquilae; 59 Aquilae
Observe
1Physical Properties
Magnitude
4.71
Spectral Type
G9+IIIb
Star Color
Orange
(B-V 1.05)
Distance
142 ly
2Position & Identifiers
RA
19h 54m 14.9s
Dec
+08° 27' 41.0"
Constellation
Aquila
(Aql)
HR
7595
HIP
97938
HD
188310
SAO
125210
Bayer
Xi
Flamsteed
59 Aql
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium+ | Medium | 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
Jun – Aug
(peak: Jul)
5Survey Image
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Explore
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
14
Exoplanets
1 known planet
View in 3D
View this system in the 3D Orrery
Interactive Keplerian orbits, procedural planet textures, habitable zone.
| Planet | Radius | Mass | Period | Distance |
|---|---|---|---|---|
| xi Aql b | 13.40R⊕ | 1.94M♃ | 137.0d | 183ly |
Habitable Zone
Size & Mass Comparison
About exoplanets — how we find them and which host stars you can observe
Discover
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.
Altair
HIP 97649; Alpha Aquilae; 53 Aquilae
Bright naked-eye star, mag 0.8
Star
mag 0.77
0.9°
Aquila
Pi Aql
Tight double — a rewarding split at 1.4″
Double Star
mag 5.72
3.6°
Aquila
Eta Aql
Pulsating variable, period 7.2d
Variable Star
mag 3.90
7.5°
Aquila
C47
NGC 6934
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 8.9
9.9°
Delphinus
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Article
Aquila
Mythology, bright stars, and deep-sky highlights.
Constellation
