21205+3107
- Unique Name: 21205+3107J 3135
- RA: 21 20 14.33
- Dec: +31 09 50.3
- Discoverer: J
- Discoverer Number: 3135
- Components:
- First year: 1944
- Last year: 2002
- Observations: 3
- First position angle: 90
- Last position angle: 96
- First separation: 3.0
- Last separation: 4.1
- Mag first component: 11.0
- Mag second component: 13.5
- Spectral type:
- Primary proper motion RA: 2
- Primary proper motion DEC: -7
- Secondary proper motion RA: 23
- Secondary proper motion DEC: -21
- Durchmusterung:
- Notes:
