21105+4713
- Unique Name: 21105+4713TDT2803
- RA: 21 10 28.76
- Dec: +47 13 21.8
- Discoverer: TDT
- Discoverer Number: 2803
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 183
- Last position angle: 183
- First separation: 0.6
- Last separation: 0.6
- Mag first component: 11.53
- Mag second component: 11.83
- Spectral type:
- Primary proper motion RA: -11
- Primary proper motion DEC: -2
- Secondary proper motion RA: -11
- Secondary proper motion DEC: -2
- Durchmusterung:
- Notes: