21220+4408
- Unique Name: 21220+4408HJ 1639
- RA: 21 22 06.47
- Dec: +44 06 56.0
- Discoverer: HJ
- Discoverer Number: 1639
- Components:
- First year: 1828
- Last year: 2002
- Observations: 4
- First position angle: 105
- Last position angle: 102
- First separation: 5.0
- Last separation: 10.7
- Mag first component: 11.61
- Mag second component: 11.41
- Spectral type:
- Primary proper motion RA: -13
- Primary proper motion DEC: -1
- Secondary proper motion RA: 2
- Secondary proper motion DEC: -5
- Durchmusterung:
- Notes:
