21378+3143
- Unique Name: 21378+3143ES 2359
- RA: 21 37 50.50
- Dec: +31 44 28.5
- Discoverer: ES
- Discoverer Number: 2359
- Components:
- First year: 1928
- Last year: 2009
- Observations: 6
- First position angle: 79
- Last position angle: 83
- First separation: 2.7
- Last separation: 2.7
- Mag first component: 10.9
- Mag second component: 11.0
- Spectral type:
- Primary proper motion RA: -6
- Primary proper motion DEC: -4
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +31 4512
- Notes: