21138+3711
- Unique Name: 21138+3711WSI 37AC
- RA: 21 13 48.78
- Dec: +37 11 07.0
- Discoverer: WSI
- Discoverer Number: 37
- Components: AC
- First year: 1998
- Last year: 2010
- Observations: 4
- First position angle: 339
- Last position angle: 337
- First separation: 10.2
- Last separation: 9.2
- Mag first component: 11.0
- Mag second component: 12.9
- Spectral type:
- Primary proper motion RA: 8
- Primary proper motion DEC: 10
- Secondary proper motion RA: -2
- Secondary proper motion DEC: 6
- Durchmusterung:
- Notes: