21207+4251
- Unique Name: 21207+4251GRV 452
- RA: 21 20 47.33
- Dec: +42 51 57.0
- Discoverer: GRV
- Discoverer Number: 452
- Components:
- First year: 1998
- Last year: 2002
- Observations: 3
- First position angle: 162
- Last position angle: 162
- First separation: 59.3
- Last separation: 59.3
- Mag first component: 12.8
- Mag second component: 13.21
- Spectral type:
- Primary proper motion RA: -11
- Primary proper motion DEC: -12
- Secondary proper motion RA: 1
- Secondary proper motion DEC: -10
- Durchmusterung:
- Notes: