21023+3931
- Unique Name: 21023+3931WRD 4EH
- RA: 21 02 29.95
- Dec: +39 30 38.3
- Discoverer: WRD
- Discoverer Number: 4
- Components: EH
- First year: 1951
- Last year: 2012
- Observations: 5
- First position angle: 160
- Last position angle: 160
- First separation: 37.3
- Last separation: 37.5
- Mag first component: 10.88
- Mag second component: 12.84
- Spectral type:
- Primary proper motion RA: -3
- Primary proper motion DEC: -6
- Secondary proper motion RA: 25
- Secondary proper motion DEC: -18
- Durchmusterung:
- Notes: N
