21238+3721
- Unique Name: 21238+3721STFA 55AC
- RA: 21 23 48.39
- Dec: +37 21 05.4
- Discoverer: STF
- Discoverer Number: 0
- Components: AC
- First year: 1880
- Last year: 2002
- Observations: 7
- First position angle: 155
- Last position angle: 154
- First separation: 179.1
- Last separation: 177.8
- Mag first component: 6.61
- Mag second component: 11.08
- Spectral type: K5
- Primary proper motion RA: -6
- Primary proper motion DEC: -7
- Secondary proper motion RA: 1
- Secondary proper motion DEC: 3
- Durchmusterung:
- Notes: N
