21577+4356
- Unique Name: 21577+4356J 3155AB
- RA: 21 57 41.80
- Dec: +43 55 41.0
- Discoverer: J
- Discoverer Number: 3155
- Components: AB
- First year: 1944
- Last year: 2007
- Observations: 6
- First position angle: 125
- Last position angle: 131
- First separation: 5.0
- Last separation: 5.9
- Mag first component: 12.2
- Mag second component: 12.5
- Spectral type:
- Primary proper motion RA: -6
- Primary proper motion DEC: 8
- Secondary proper motion RA: -3
- Secondary proper motion DEC: -4
- Durchmusterung:
- Notes:
