21057+2129
- Unique Name: 21057+2129TDT2741
- RA: 21 05 41.46
- Dec: +21 28 49.6
- Discoverer: TDT
- Discoverer Number: 2741
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 289
- Last position angle: 289
- First separation: 0.7
- Last separation: 0.7
- Mag first component: 11.59
- Mag second component: 11.6
- Spectral type:
- Primary proper motion RA: -2
- Primary proper motion DEC: 1
- Secondary proper motion RA: -2
- Secondary proper motion DEC: 1
- Durchmusterung:
- Notes: