21155+4205
- Unique Name: 21155+4205TDT2861
- RA: 21 15 31.50
- Dec: +42 05 06.2
- Discoverer: TDT
- Discoverer Number: 2861
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 287
- Last position angle: 287
- First separation: 2.4
- Last separation: 2.4
- Mag first component: 11.46
- Mag second component: 12.36
- Spectral type:
- Primary proper motion RA: 6
- Primary proper motion DEC: 4
- Secondary proper motion RA: 6
- Secondary proper motion DEC: 4
- Durchmusterung:
- Notes: