21022+4235
- Unique Name: 21022+4235ES 1577
- RA: 21 02 11.84
- Dec: +42 33 56.9
- Discoverer: ES
- Discoverer Number: 1577
- Components:
- First year: 1892
- Last year: 2004
- Observations: 8
- First position angle: 41
- Last position angle: 40
- First separation: 5.3
- Last separation: 5.6
- Mag first component: 10.86
- Mag second component: 11.4
- Spectral type:
- Primary proper motion RA: -4
- Primary proper motion DEC: -3
- Secondary proper motion RA: 1
- Secondary proper motion DEC: 1
- Durchmusterung: +41 3967
- Notes: