21123+3345
- Unique Name: 21123+3345TDT2824
- RA: 21 12 16.92
- Dec: +33 45 24.3
- Discoverer: TDT
- Discoverer Number: 2824
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 26
- Last position angle: 26
- First separation: 0.5
- Last separation: 0.5
- Mag first component: 11.29
- Mag second component: 11.44
- Spectral type:
- Primary proper motion RA: 1
- Primary proper motion DEC: 3
- Secondary proper motion RA: 1
- Secondary proper motion DEC: 3
- Durchmusterung:
- Notes: