21161+3747
- Unique Name: 21161+3747COU1819
- RA: 21 16 03.56
- Dec: +37 47 09.4
- Discoverer: COU
- Discoverer Number: 1819
- Components:
- First year: 1979
- Last year: 2007
- Observations: 3
- First position angle: 320
- Last position angle: 328
- First separation: 0.6
- Last separation: 0.7
- Mag first component: 9.4
- Mag second component: 11.9
- Spectral type: G0
- Primary proper motion RA: 15
- Primary proper motion DEC: -29
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +37 4248
- Notes: