21039+4138
- Unique Name: 21039+4138STTA214AB
- RA: 21 03 52.13
- Dec: +41 37 41.4
- Discoverer: STT
- Discoverer Number: 0
- Components: AB
- First year: 1875
- Last year: 2005
- Observations: 26
- First position angle: 185
- Last position angle: 185
- First separation: 57.4
- Last separation: 57.3
- Mag first component: 6.37
- Mag second component: 8.64
- Spectral type: F3IV
- Primary proper motion RA: -3
- Primary proper motion DEC: -54
- Secondary proper motion RA: -5
- Secondary proper motion DEC: -56
- Durchmusterung: +41 3987
- Notes: N
