Epsilon Reticuli — Star in Reticulum
Observe
1Physical Properties
Magnitude
4.44
Spectral Type
K2IVa
supergiant
Star Color
Orange
(B-V 1.08)
Distance
49 ly
2Position & Identifiers
RA
04h 16m 28.9s
Dec
-59° 18' 07.0"
Constellation
Reticulum
(Ret)
HR
1355
HIP
19921
HD
27442
SAO
233463
Bayer
Epsilon
Querying VizieR catalog...
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
Set a location in User Settings to see visibility data.
Best season
Oct – Dec
(peak: Nov)
5Survey Image
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Explore
7
Size Comparison
Querying VizieR for stellar data…
8
Compare Stars
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
15
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 |
|---|---|---|---|---|
| HD 27442 b | 13.50R⊕ | 1.56M♃ | 1.2yr | 60ly |
Habitable Zone
Size & Mass Comparison
About exoplanets — how we find them and which host stars you can observe
Discover
16
Light Travel Time Machine
17
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.
IC 2056
Barred spiral galaxy
Galaxy
mag 12.0
0.9°
Reticulum
Delta Ret
Cool red giant
Star
mag 4.56
3.0°
Reticulum
Gamma Ret
Cool red giant
Star
mag 4.51
3.4°
Reticulum
R Dor
Semi-regular variable, range 4.8–6.6
Variable Star
mag 5.40
3.7°
Dorado
NGC 1831
Open cluster
Open Cluster
mag 11.0
8.1°
Dorado
Explore Nightbase
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Arthur Eddington
1919 eclipse expedition confirming general relativity; first theory of stellar interiors; the Eddington limit
Biography
Reticulum
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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