21078+3421
- Unique Name: 21078+3421ABH 141AF
- RA: 21 07 47.29
- Dec: +34 21 24.8
- Discoverer: ABH
- Discoverer Number: 141
- Components: AF
- First year: 1987
- Last year: 2012
- Observations: 3
- First position angle: 92
- Last position angle: 92
- First separation: 56.8
- Last separation: 56.4
- Mag first component: 10.22
- Mag second component: 14.1
- Spectral type: A7III
- Primary proper motion RA: 8
- Primary proper motion DEC: -2
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -20
- Durchmusterung:
- Notes: U
