21159+3340
- Unique Name: 21159+3340GYL 52
- RA: 21 15 56.87
- Dec: +33 39 51.3
- Discoverer: GYL
- Discoverer Number: 52
- Components:
- First year: 1893
- Last year: 2012
- Observations: 8
- First position angle: 67
- Last position angle: 62
- First separation: 27.3
- Last separation: 29.1
- Mag first component: 11.17
- Mag second component: 11.28
- Spectral type:
- Primary proper motion RA: -17
- Primary proper motion DEC: -56
- Secondary proper motion RA: -14
- Secondary proper motion DEC: -27
- Durchmusterung: +33 4212
- Notes: