21452+5254
- Unique Name: 21452+5254ES 1011
- RA: 21 45 09.90
- Dec: +52 53 47.3
- Discoverer: ES
- Discoverer Number: 1011
- Components:
- First year: 1910
- Last year: 2003
- Observations: 3
- First position angle: 219
- Last position angle: 222
- First separation: 7.5
- Last separation: 7.5
- Mag first component: 8.94
- Mag second component: 11.2
- Spectral type: G0
- Primary proper motion RA: -71
- Primary proper motion DEC: -68
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +52 3026
- Notes: D
