21172+0438
- Unique Name: 21172+0438HU 274
- RA: 21 17 13.94
- Dec: +04 37 35.5
- Discoverer: HU
- Discoverer Number: 274
- Components:
- First year: 1900
- Last year: 1945
- Observations: 3
- First position angle: 149
- Last position angle: 148
- First separation: 4.2
- Last separation: 4.2
- Mag first component: 8.3
- Mag second component: 15.6
- Spectral type: K5
- Primary proper motion RA: -12
- Primary proper motion DEC: -24
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +04 4642
- Notes: