21241+2519
- Unique Name: 21241+2519BU 447AB
- RA: 21 24 07.42
- Dec: +25 18 44.6
- Discoverer: BU
- Discoverer Number: 447
- Components: AB
- First year: 1878
- Last year: 2013
- Observations: 17
- First position angle: 330
- Last position angle: 309
- First separation: 8.5
- Last separation: 9.4
- Mag first component: 6.2
- Mag second component: 12.2
- Spectral type: A2V
- Primary proper motion RA: 40
- Primary proper motion DEC: 22
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +24 4394
- Notes: N
