Deep Sky Monitor From Curiosity to Cosmos.

Octans Oct

Octans is one of the 88 constellations, covering 291 square degrees of the sky (50th largest). It is highest at midnight in August and best in the evening sky in September and October.

1 of its best-known object has a page of their own here.

Facts

AbbreviationOct
Size291 square degrees (50th largest of the 88; the full Moon covers about 0.2)
Middle (J2000)21h 15m, −85°
Highest at midnightAugust (in the evening, around 8–10 pm: September and October)
How highFrom India (about 20° N) its middle never rises; from 50° N it never rises.
Pages here1 object

Galaxies

1

Brightest NGC and IC objects

OpenNGC
ObjectTypeMagnitudeSize
NGC 7098 (on the map)Galaxy 11.51.8′
NGC 6438 (on the map)Galaxy 11.61.8′
NGC 7095 (on the map)Galaxy 11.92.7′
NGC 6920 (on the map)Galaxy 122.3′
NGC 6438A (on the map)Galaxy 12.63.4′
NGC 7637 (on the map)Galaxy 13.32.1′
NGC 2573 (Polarissima Australis)Galaxy 13.51.9′
IC 4864 (on the map)Galaxy 13.61.8′
NGC 6557 (on the map)Galaxy 141.4′
IC 4333 (on the map)Galaxy 14.81.8′
IC 5040 (on the map)Galaxy 15.20.8′
NGC 2573B (on the map)Galaxy 15.31.1′

Smaller magnitudes are brighter; the faintest stars the eye sees are about 6. The full Moon is about 31′ across.

Data: IAU constellation boundaries (Roman 1987) · OpenNGC (Mattia Verga, CC BY-SA 4.0) · Data sources & credits