21010+4528
- Unique Name: 21010+4528ES 1271
- RA: 21 01 00.21
- Dec: +45 28 07.6
- Discoverer: ES
- Discoverer Number: 1271
- Components:
- First year: 1913
- Last year: 2002
- Observations: 4
- First position angle: 31
- Last position angle: 26
- First separation: 3.0
- Last separation: 3.2
- Mag first component: 10.7
- Mag second component: 11.4
- Spectral type:
- Primary proper motion RA: -7
- Primary proper motion DEC: -27
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +44 3672
- Notes: