21355+4300
- Unique Name: 21355+4300ES 1456
- RA: 21 35 31.85
- Dec: +42 58 35.4
- Discoverer: ES
- Discoverer Number: 1456
- Components:
- First year: 1915
- Last year: 2007
- Observations: 2
- First position angle: 135
- Last position angle: 137
- First separation: 4.3
- Last separation: 3.4
- Mag first component: 10.6
- Mag second component: 13.1
- Spectral type:
- Primary proper motion RA: -10
- Primary proper motion DEC: -2
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +42 4147
- Notes: