21521+4313
- Unique Name: 21521+4313TDT3204
- RA: 21 52 03.03
- Dec: +43 13 11.7
- Discoverer: TDT
- Discoverer Number: 3204
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 30
- Last position angle: 30
- First separation: 0.9
- Last separation: 0.9
- Mag first component: 11.86
- Mag second component: 12.55
- Spectral type:
- Primary proper motion RA: 2
- Primary proper motion DEC: -7
- Secondary proper motion RA: 2
- Secondary proper motion DEC: -7
- Durchmusterung:
- Notes: