21290+5844
- Unique Name: 21290+5844MLR 436AB
- RA: 21 28 57.76
- Dec: +58 44 23.3
- Discoverer: MLR
- Discoverer Number: 436
- Components: AB
- First year: 1973
- Last year: 2002
- Observations: 6
- First position angle: 345
- Last position angle: 343
- First separation: 4.1
- Last separation: 4.1
- Mag first component: 7.95
- Mag second component: 11.8
- 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
