21172+2437
- Unique Name: 21172+2437POU5311
- RA: 21 17 06.13
- Dec: +24 37 02.7
- Discoverer: POU
- Discoverer Number: 5311
- Components:
- First year: 1898
- Last year: 2001
- Observations: 3
- First position angle: 170
- Last position angle: 166
- First separation: 16.0
- Last separation: 15.9
- Mag first component: 12.8
- Mag second component: 14.5
- Spectral type:
- Primary proper motion RA: -22
- Primary proper motion DEC: -7
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: