20400-4359
- Unique Name: 20400-4359DON 990AC
- RA: 20 39 57.04
- Dec: -43 59 09.6
- Discoverer: DON
- Discoverer Number: 990
- Components: AC
- First year: 1929
- Last year: 1999
- Observations: 3
- First position angle: 286
- Last position angle: 291
- First separation: 3.1
- Last separation: 6.4
- Mag first component: 10.15
- Mag second component: 14.2
- Spectral type: G0V
- Primary proper motion RA: 64
- Primary proper motion DEC: -43
- Secondary proper motion RA: -112
- Secondary proper motion DEC: 26
- Durchmusterung:
- Notes: