21019+4055
- Unique Name: 21019+4055TDT2704
- RA: 21 01 56.73
- Dec: +40 55 12.7
- Discoverer: TDT
- Discoverer Number: 2704
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 316
- Last position angle: 316
- First separation: 1.1
- Last separation: 1.1
- Mag first component: 12.07
- Mag second component: 12.47
- Spectral type:
- Primary proper motion RA: -2
- Primary proper motion DEC: -7
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -7
- Durchmusterung:
- Notes: