21121+2451
- Unique Name: 21121+2451POU5245
- RA: 21 12 05.93
- Dec: +24 50 34.2
- Discoverer: POU
- Discoverer Number: 5245
- Components:
- First year: 1898
- Last year: 2009
- Observations: 4
- First position angle: 217
- Last position angle: 216
- First separation: 17.6
- Last separation: 18.9
- Mag first component: 12.0
- Mag second component: 12.9
- Spectral type:
- Primary proper motion RA: 2
- Primary proper motion DEC: -23
- Secondary proper motion RA: -8
- Secondary proper motion DEC: -29
- Durchmusterung:
- Notes: