21435+2721
- Unique Name: 21435+2721A 299BC
- RA: 21 43 31.64
- Dec: +27 20 37.3
- Discoverer: A
- Discoverer Number: 299
- Components: BC
- First year: 1901
- Last year: 1928
- Observations: 3
- First position angle: 121
- Last position angle: 127
- First separation: 0.3
- Last separation: 0.4
- Mag first component: 10.47
- Mag second component: 12.0
- Spectral type:
- Primary proper motion RA: -29
- Primary proper motion DEC: -32
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: N
