21435+5847
- Unique Name: 21435+5847BU 690AC
- RA: 21 43 30.45
- Dec: +58 46 48.2
- Discoverer: BU
- Discoverer Number: 690
- Components: AC
- First year: 1878
- Last year: 2012
- Observations: 9
- First position angle: 299
- Last position angle: 294
- First separation: 41.2
- Last separation: 41.9
- Mag first component: 4.2
- Mag second component: 12.7
- Spectral type: M2Iae
- Primary proper motion RA: 5
- Primary proper motion DEC: -4
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: N
