21170+4704
- Unique Name: 21170+4704COU2437
- RA: 21 17 00.15
- Dec: +47 03 26.0
- Discoverer: COU
- Discoverer Number: 2437
- Components:
- First year: 1986
- Last year: 1991
- Observations: 2
- First position angle: 235
- Last position angle: 221
- First separation: 0.4
- Last separation: 0.5
- Mag first component: 11.07
- Mag second component: 11.21
- Spectral type:
- Primary proper motion RA: -14
- Primary proper motion DEC: -2
- Secondary proper motion RA: -14
- Secondary proper motion DEC: -2
- Durchmusterung: +46 3255
- Notes: