21435+2721
- Unique Name: 21435+2721A 299DF
- RA: 21 43 57.12
- Dec: +27 23 23.9
- Discoverer: A
- Discoverer Number: 299
- Components: DF
- First year: 1910
- Last year: 2008
- Observations: 6
- First position angle: 19
- Last position angle: 26
- First separation: 124.7
- Last separation: 146.7
- Mag first component: 10.19
- Mag second component: 11.08
- Spectral type: F6
- Primary proper motion RA: -241
- Primary proper motion DEC: -161
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -40
- Durchmusterung:
- Notes: N
