21511+5040
- Unique Name: 21511+5040ES 827
- RA: 21 51 06.59
- Dec: +50 40 17.2
- Discoverer: ES
- Discoverer Number: 827
- Components:
- First year: 1909
- Last year: 2003
- Observations: 4
- First position angle: 244
- Last position angle: 241
- First separation: 3.4
- Last separation: 3.9
- Mag first component: 11.6
- Mag second component: 11.9
- Spectral type:
- Primary proper motion RA: 13
- Primary proper motion DEC: 6
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +49 3642
- Notes: