21238+3721
- Unique Name: 21238+3721STFA 55AB
- RA: 21 23 48.39
- Dec: +37 21 05.4
- Discoverer: STF
- Discoverer Number: 0
- Components: AB
- First year: 1835
- Last year: 2012
- Observations: 30
- First position angle: 303
- Last position angle: 304
- First separation: 365.3
- Last separation: 364.1
- Mag first component: 6.61
- Mag second component: 6.61
- Spectral type: K5
- Primary proper motion RA: -6
- Primary proper motion DEC: -7
- Secondary proper motion RA: 52
- Secondary proper motion DEC: 25
- Durchmusterung: +36 4543
- Notes: N D
