21290+5844
- Unique Name: 21290+5844HDS3058Aa,Ab
- RA: 21 28 57.76
- Dec: +58 44 23.3
- Discoverer: HDS
- Discoverer Number: 3058
- Components: Aa,Ab
- First year: 1991
- Last year: 2004
- Observations: 6
- First position angle: 200
- Last position angle: 182
- First separation: 0.1
- Last separation: 0.1
- Mag first component: 8.39
- Mag second component: 9.64
- Spectral type: B0V
- Primary proper motion RA: 0
- Primary proper motion DEC: 5
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +58 2272
- Notes: N
