21391+2036
- Unique Name: 21391+2036STT 444
- RA: 21 39 04.16
- Dec: +20 36 05.7
- Discoverer: STT
- Discoverer Number: 444
- Components:
- First year: 1850
- Last year: 2009
- Observations: 21
- First position angle: 274
- Last position angle: 278
- First separation: 8.0
- Last separation: 8.0
- Mag first component: 8.06
- Mag second component: 11.19
- Spectral type: F5
- Primary proper motion RA: 33
- Primary proper motion DEC: 14
- Secondary proper motion RA: 34
- Secondary proper motion DEC: 14
- Durchmusterung: +19 4755
- Notes: