M 1-31 Arp 2
NameM 2-21
TypePN
Other namesPK0-2.4 / PNG000.7-02.7
Constellation Sagittarius
RA17:58:09.6
Dec-29:44:20.0
major_axis 6.0''
minor_axis 12.0''
mag13.6
surface_bright8.6