21291+4202
- Unique Name: 21291+4202TDT2987
- RA: 21 29 05.45
- Dec: +42 01 45.8
- Discoverer: TDT
- Discoverer Number: 2987
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 37
- Last position angle: 37
- First separation: 0.5
- Last separation: 0.5
- Mag first component: 10.7
- Mag second component: 11.0
- Spectral type:
- Primary proper motion RA: 7
- Primary proper motion DEC: 3
- Secondary proper motion RA: 7
- Secondary proper motion DEC: 3
- Durchmusterung:
- Notes: