21175+3919
- Unique Name: 21175+3919MLB 959
- RA: 21 17 32.64
- Dec: +39 18 54.5
- Discoverer: MLB
- Discoverer Number: 959
- Components:
- First year: 1934
- Last year: 2002
- Observations: 3
- First position angle: 294
- Last position angle: 292
- First separation: 6.2
- Last separation: 7.6
- Mag first component: 10.0
- Mag second component: 14.0
- Spectral type:
- Primary proper motion RA: 9
- Primary proper motion DEC: -3
- Secondary proper motion RA: -14
- Secondary proper motion DEC: 33
- Durchmusterung:
- Notes: