21321+3412
- Unique Name: 21321+3412HO 603AB
- RA: 21 32 04.61
- Dec: +34 12 06.1
- Discoverer: HO
- Discoverer Number: 603
- Components: AB
- First year: 1893
- Last year: 2012
- Observations: 16
- First position angle: 252
- Last position angle: 251
- First separation: 80.1
- Last separation: 80.5
- Mag first component: 7.53
- Mag second component: 9.82
- Spectral type: F0
- Primary proper motion RA: 25
- Primary proper motion DEC: -4
- Secondary proper motion RA: 26
- Secondary proper motion DEC: -5
- Durchmusterung: +33 4286
- Notes:
