20456+3521
- Unique Name: 20456+3521TDT2520
- RA: 20 45 34.03
- Dec: +35 21 14.0
- Discoverer: TDT
- Discoverer Number: 2520
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 16
- Last position angle: 16
- First separation: 0.4
- Last separation: 0.4
- Mag first component: 10.49
- Mag second component: 10.95
- Spectral type:
- Primary proper motion RA: -3
- Primary proper motion DEC: -1
- Secondary proper motion RA: -3
- Secondary proper motion DEC: -1
- Durchmusterung:
- Notes: