21023+3931
- Unique Name: 21023+3931WRD 4ED
- RA: 21 02 29.95
- Dec: +39 30 38.3
- Discoverer: WRD
- Discoverer Number: 4
- Components: ED
- First year: 2000
- Last year: 2012
- Observations: 3
- First position angle: 230
- Last position angle: 230
- First separation: 77.6
- Last separation: 77.9
- Mag first component: 10.88
- Mag second component: 12.61
- Spectral type:
- Primary proper motion RA: -3
- Primary proper motion DEC: -6
- Secondary proper motion RA: -8
- Secondary proper motion DEC: -10
- Durchmusterung:
- Notes: N
