Deep-sky object
Checkmark Nebula
Checkmark Nebula is an H II region nebula with cluster somewhere between 5 000 and 6 000 light-years away, in Sagittarius, about 20 light-years across.
See it live
It is on the live 3D map, where it really is.
Key facts
- Type
- H II region nebula with cluster
- Constellation
- Sagittarius
- Distance
- 5 000 to 6 000 light-years
- Size
- about 20.0 light-years across
- Brightness from Earth
- magnitude 7.0
- Catalogue
- M17, NGC 6618
See it from here
Too faint for the eye; a telescope, or a long photograph, shows it.
How the map draws it
Drawn as a soft glow in the manner of its kind at its measured distance, as wide as it measures; the pattern in it is illustrative and its true shape is not drawn — the kind of thing, not this exact one.