21446+2539
- Unique Name: 21446+2539BU 989AB
- RA: 21 44 38.70
- Dec: +25 38 42.0
- Discoverer: BU
- Discoverer Number: 989
- Components: AB
- First year: 1880
- Last year: 2011
- Observations: 434
- First position angle: 138
- Last position angle: 281
- First separation: 0.3
- Last separation: 0.2
- Mag first component: 4.94
- Mag second component: 5.04
- Spectral type: F5IV
- Primary proper motion RA: 33
- Primary proper motion DEC: 11
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +24 4463
- Notes: NOD
