M40 (WNC 4) - Winnecke 4
Messier 40 (WNC 4), also known as the Winnecke 4, is a double star located in the constellation Ursa Major, in the Orion Arm of the Milky Way Galaxy in the Local Group of galaxies. M40 is 1,100 | 460 light years away from Earth.
M40 is best viewed during early spring, is magnitude 9.6 | 10.1, and can be viewed with small telescope. M40 is in apparent size. For reference, the full moon is 30' (arc minutes) in size.
- Name:
- Winnecke 4
- Type:
- double star
- Constellation:
- Ursa Major
- NGC or IC:
- WNC 4
- Magnitude:
- 9.6 | 10.1
- Viewing:
- small telescope
- Distance (light years):
- 1,100 | 460 LY
- RA:
- 12h 20.0m
- Dec:
- 58 22'
- Season:
- early spring
- Milky Way location:
- Orion Arm
- Galaxy group:
- Local Group
- Messier Marathon #:
- 39
* The naked eye can see up to magnitude 8 objects under ideal dark sky conditions.