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| Abbreviation: Oct |
| English Name: The Octant |
| Genitive: Nu Octantis |
| Hemisphere: Southern Hemisphere (Never visible from the UK.) |
| Location: Between the constellations of Hydrus and Apus. |
| Visible between latitudes: +05 and -90 degrees |
| Best season: Autumn |
| Seen in three seasons: Summer, Autumn, and Winter |
| Best seen in: October |
| Seen between: Only October. |
| Right Ascension (RA): 22 hour |
| Declination (DEC): -85 degrees |
| Area (square degrees): 291 (50th) |
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Octans (The Octant)
- A faint circumpolar constellation, notable only because it contains the South Celestial Pole (SCP) – Unlike, Ursa Minor’s Polaris, there is no bright star near the South Pole.
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Messier Objects in Octans
| No Messier objects in Octans |
| s. |
More objects in Octans
| Select Catalog | No of Objects |
| Barnard (B) | 0x object |
| Caldwell (C) | 0x object |
| Collinder (Cr) | 1x object |
| New General Catalogue (NGC) | 7x objects |
| Index Catalogue (IC) | 8x objects |
| Sharpless (Sh2) | 0x object |
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Features of Interest
- Melotte 227 (Collinder 411) – Open Cluster; small containing about 40 stars; not far from the Southern Celestial Pole (SCP).
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Named Stars
- Nu Octantis – the brightest star in  Octans is a magnitude +3.7.
- Polaris Australis (Sigma Oct); this is the nearest naked-eye to the South Celestial Pole (SCP), lying about one degree away, although at magnitude +5.5 so hardly.
- more list of stars in Octans.
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IAU Sky Chart: Octans
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Constellations: Southern Celestial Hemisphere
– never seen from the UK
| Apus | Ara | Caelum | Carina | Centaurus | Chameleon |
| Corona Australis | Crux | Dorado | Grus | Horologium | Hydrus |
| Indus | Mensa | Octans | Pavo | Phoenix | Pictor |
| Reticulum | Telescopium | Triangulum Australe | Tucana | Vela | Volans |
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