21526+4513
- Unique Name: 21526+4513ES 522
- RA: 21 52 37.51
- Dec: +45 14 22.7
- Discoverer: ES
- Discoverer Number: 522
- Components:
- First year: 1907
- Last year: 2003
- Observations: 4
- First position angle: 175
- Last position angle: 144
- First separation: 4.4
- Last separation: 3.5
- Mag first component: 9.6
- Mag second component: 11.6
- Spectral type:
- Primary proper motion RA: -22
- Primary proper motion DEC: -19
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +44 3972
- Notes: