Deep-sky object
Webb's Cross Cluster
Webb's Cross Cluster is an open cluster 4 250 light-years away, in Sagittarius, about 7 light-years across, seen as it was 4 250 years ago.
See it live
It is on the live 3D map, where it really is.
Key facts
- Type
- Open cluster
- Constellation
- Sagittarius
- Distance
- 4 250 light-years
- Size
- about 7.00 light-years across
- Brightness from Earth
- magnitude 5.9
- Catalogue
- M21, NGC 6531
See it from here
Bright enough to see with your own eyes from a dark place.
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.