Octans
The octant. Genitive Octantis, abbreviated Oct. Introduced by Lacaille.
Area
291.07 sq°
50 of 88 by size
Brightest star
ν Octantis
magnitude 3.76
Best seen
August
on the meridian at midnight
Visible from
16°N to 90°S
some part above the horizon
Where it is
Principal stars
Every star to magnitude 4, brightest first.
| Star | Magnitude | HR |
|---|---|---|
| ν Octantis | 3.76 | 8254 |
Deep sky
Objects with a Messier number or a name people use.
| Object | Catalogue | Type | Magnitude | Size |
|---|---|---|---|---|
| Polarissima Australis | NGC 2573 | Galaxy | 13.5 | 3.6 |
- Magnitude: — where NGC 2000 gives none.
- Size: the largest dimension, in arcminutes.
My Sky
Rise, highest and set over your place, for any night: Octans
Further info
Sources
Principal stars: Bright Star Catalogue
Deep sky: NGC 2000.0
Area and borders: IAU constellation boundaries
