21121+1946
- Unique Name: 21121+1946TDT2820
- RA: 21 12 09.00
- Dec: +19 45 44.4
- Discoverer: TDT
- Discoverer Number: 2820
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 107
- Last position angle: 107
- First separation: 0.7
- Last separation: 0.7
- Mag first component: 10.66
- Mag second component: 10.72
- Spectral type:
- Primary proper motion RA: 5
- Primary proper motion DEC: -6
- Secondary proper motion RA: 5
- Secondary proper motion DEC: -6
- Durchmusterung:
- Notes: