21117+3818
- Unique Name: 21117+3818SMA 136
- RA: 21 11 46.82
- Dec: +38 16 56.8
- Discoverer: SMA
- Discoverer Number: 136
- Components:
- First year: 1923
- Last year: 2003
- Observations: 7
- First position angle: 142
- Last position angle: 125
- First separation: 4.0
- Last separation: 4.0
- Mag first component: 10.9
- Mag second component: 11.6
- Spectral type:
- Primary proper motion RA: -10
- Primary proper motion DEC: -22
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -20
- Durchmusterung:
- Notes: N
