21584+4423
- Unique Name: 21584+4423LYS 11
- RA: 21 58 22.08
- Dec: +44 22 46.1
- Discoverer: LYS
- Discoverer Number: 11
- Components:
- First year: 1895
- Last year: 2002
- Observations: 7
- First position angle: 48
- Last position angle: 55
- First separation: 10.6
- Last separation: 11.8
- Mag first component: 11.03
- Mag second component: 10.91
- Spectral type:
- Primary proper motion RA: -20
- Primary proper motion DEC: -20
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -25
- Durchmusterung:
- Notes: N
