21377+3911
- Unique Name: 21377+3911ALI 975
- RA: 21 37 38.66
- Dec: +39 10 56.1
- Discoverer: ALI
- Discoverer Number: 975
- Components:
- First year: 1929
- Last year: 2013
- Observations: 4
- First position angle: 154
- Last position angle: 150
- First separation: 13.4
- Last separation: 12.8
- Mag first component: 11.4
- Mag second component: 12.23
- Spectral type:
- Primary proper motion RA: -10
- Primary proper motion DEC: -4
- Secondary proper motion RA: 2
- Secondary proper motion DEC: 0
- Durchmusterung:
- Notes: