21331+3938
- Unique Name: 21331+3938MLB 899AC
- RA: 21 33 08.33
- Dec: +39 38 09.6
- Discoverer: MLB
- Discoverer Number: 899
- Components: AC
- First year: 1933
- Last year: 2002
- Observations: 3
- First position angle: 139
- Last position angle: 142
- First separation: 27.0
- Last separation: 27.8
- Mag first component: 12.21
- Mag second component: 14.03
- Spectral type: PN
- Primary proper motion RA: -12
- Primary proper motion DEC: -17
- Secondary proper motion RA: 17
- Secondary proper motion DEC: -9
- Durchmusterung:
- Notes: N
