21504+2519
- Unique Name: 21504+2519POU5525AC
- RA: 21 50 19.34
- Dec: +25 19 05.9
- Discoverer: POU
- Discoverer Number: 5525
- Components: AC
- First year: 1898
- Last year: 2009
- Observations: 4
- First position angle: 305
- Last position angle: 302
- First separation: 15.5
- Last separation: 15.7
- Mag first component: 12.65
- Mag second component: 14.41
- Spectral type:
- Primary proper motion RA: -51
- Primary proper motion DEC: 66
- Secondary proper motion RA: -29
- Secondary proper motion DEC: 1
- Durchmusterung:
- Notes: