21139+4438
- Unique Name: 21139+4438TDT2839
- RA: 21 13 56.92
- Dec: +44 38 00.0
- Discoverer: TDT
- Discoverer Number: 2839
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 359
- Last position angle: 359
- First separation: 1.2
- Last separation: 1.2
- Mag first component: 11.2
- Mag second component: 12.42
- Spectral type:
- Primary proper motion RA: -9
- Primary proper motion DEC: -2
- Secondary proper motion RA: -9
- Secondary proper motion DEC: -2
- Durchmusterung:
- Notes: