21185+4747
- Unique Name: 21185+4747HJ 1635AD
- RA: 21 18 31.94
- Dec: +47 47 11.0
- Discoverer: HJ
- Discoverer Number: 1635
- Components: AD
- First year: 1912
- Last year: 2012
- Observations: 5
- First position angle: 240
- Last position angle: 241
- First separation: 18.6
- Last separation: 17.3
- Mag first component: 10.24
- Mag second component: 14.8
- Spectral type:
- Primary proper motion RA: -5
- Primary proper motion DEC: -5
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: