21241+2519
- Unique Name: 21241+2519BU 447AF
- RA: 21 24 07.42
- Dec: +25 18 44.6
- Discoverer: BU
- Discoverer Number: 447
- Components: AF
- First year: 1891
- Last year: 2009
- Observations: 6
- First position angle: 217
- Last position angle: 217
- First separation: 79.5
- Last separation: 83.2
- Mag first component: 6.2
- Mag second component: 10.7
- Spectral type: A2V
- Primary proper motion RA: 40
- Primary proper motion DEC: 9
- Secondary proper motion RA: -5
- Secondary proper motion DEC: -8
- Durchmusterung:
- Notes: N
