21435+2721
- Unique Name: 21435+2721A 299AB
- RA: 21 43 31.64
- Dec: +27 20 37.3
- Discoverer: A
- Discoverer Number: 299
- Components: AB
- First year: 1901
- Last year: 2009
- Observations: 14
- First position angle: 59
- Last position angle: 68
- First separation: 0.8
- Last separation: 1.1
- Mag first component: 9.95
- Mag second component: 10.47
- Spectral type: G0
- Primary proper motion RA: -29
- Primary proper motion DEC: -32
- Secondary proper motion RA: -29
- Secondary proper motion DEC: -32
- Durchmusterung: +26 4249
- Notes: N
