HIP 81141 — Star in Apus
Observe
1Physical Properties
Magnitude
5.50
Spectral Type
K1IIICNIa-Ib
giant
Star Color
Red
(B-V 1.22)
2Position & Identifiers
RA
16h 34m 19.3s
Dec
-70° 59' 17.0"
Constellation
Apus
(Aps)
HR
6135
HIP
81141
HD
148488
SAO
257409
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
Apr – Jun
(peak: May)
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
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.
C107
NGC 6101
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 9.3
1.3°
Apus
Atria
HIP 82273; Alpha Trianguli Australis
Bright naked-eye star, mag 1.9
Star
mag 1.92
2.3°
Triangulum Australe
IC 4654
Bright spiral galaxy
Galaxy
mag 12.30
5.7°
Apus
X TrA
Semi-regular variable, range 5.0–6.0
Variable Star
mag 5.81
6.7°
Triangulum Australe
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Biography
Apus
Mythology, bright stars, and deep-sky highlights.
Constellation
The Hertzsprung-Russell Diagram — Reading Stars Like a Map
The HR diagram turns the night sky into a physics map: every named star has a spot, every spot tells you mass, age, and fate. A guide for amateur observers.
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