02171+5645
- Unique Name: 02171+5645ES 1874
- RA: 02 17 04.31
- Dec: +56 45 11.2
- Discoverer: ES
- Discoverer Number: 1874
- Components:
- First year: 1921
- Last year: 1933
- Observations: 2
- First position angle: 144
- Last position angle: 147
- First separation: 3.5
- Last separation: 2.8
- Mag first component: 8.48
- Mag second component: 11.2
- Spectral type: B2IIIe
- Primary proper motion RA: -6
- Primary proper motion DEC: 11
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: