21023+3931
- Unique Name: 21023+3931WRD 4AG
- RA: 21 02 29.95
- Dec: +39 30 38.3
- Discoverer: WRD
- Discoverer Number: 4
- Components: AG
- First year: 1875
- Last year: 2002
- Observations: 3
- First position angle: 230
- Last position angle: 223
- First separation: 95.0
- Last separation: 101.3
- Mag first component: 6.62
- Mag second component: 12.46
- Spectral type: K3II-III
- Primary proper motion RA: 2
- Primary proper motion DEC: 1
- Secondary proper motion RA: -12
- Secondary proper motion DEC: -13
- Durchmusterung:
- Notes: N
