21183+4140
- Unique Name: 21183+4140GII 30AB,C
- RA: 21 18 19.27
- Dec: +41 40 06.3
- Discoverer: GII
- Discoverer Number: 30
- Components: AB,C
- First year: 2002
- Last year: 2010
- Observations: 2
- First position angle: 188
- Last position angle: 188
- First separation: 14.1
- Last separation: 12.9
- Mag first component: 10.4
- Mag second component: 12.3
- Spectral type:
- Primary proper motion RA: -3
- Primary proper motion DEC: -4
- Secondary proper motion RA: 3
- Secondary proper motion DEC: -6
- Durchmusterung:
- Notes: