21090+0410
- Unique Name: 21090+0410HJ 5515AB
- RA: 21 08 40.30
- Dec: +04 13 19.8
- Discoverer: HJ
- Discoverer Number: 5515
- Components: AB
- First year: 1910
- Last year: 2000
- Observations: 3
- First position angle: 112
- Last position angle: 125
- First separation: 14.1
- Last separation: 14.3
- Mag first component: 12.44
- Mag second component: 12.62
- Spectral type:
- Primary proper motion RA: 12
- Primary proper motion DEC: -6
- Secondary proper motion RA: 0
- Secondary proper motion DEC: -40
- Durchmusterung:
- Notes: N
