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Gamma Octantis — Star in Octans

HIP 814; Gamma3 Octantis

Magnitude 5.3m Star Octans (Oct) Visible
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Observe

1Physical Properties

Magnitude 5.28
Spectral Type G8III giant
Star Color Orange (B-V 1.05)

2Position & Identifiers

RA 00h 10m 02.1s
Dec -82° 13' 26.0"
Constellation Octans (Oct)
HR 30
HIP 814
HD 636
SAO 258215
Bayer Gamma3
SIMBAD Wikipedia

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium Hard+ Hard
50mm finder Easy Easy Easy
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 Aug – Oct (peak: Sep)

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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Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map
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.

Epsilon Oct
Medium
Semi-regular variable, range 4.6–5.3
Variable Star mag 5.10 4.5° Octans
Lambda Oct
Easy
Easy double, sep 3.3″
Double Star mag 5.29 4.5° Octans
IC 2051
Medium
Barred spiral galaxy
Galaxy mag 11.23 6.6° Mensa
NGC 1841
Hard+
Globular cluster — dense ball of ancient stars
Globular Cluster mag 12.0 7.9° Mensa
Show on Map

Explore Nightbase

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