21118+2943
- Unique Name: 21118+2943HAU 27
- RA: 21 11 48.53
- Dec: +29 42 42.1
- Discoverer: HAU
- Discoverer Number: 27
- Components:
- First year: 1894
- Last year: 2003
- Observations: 9
- First position angle: 298
- Last position angle: 297
- First separation: 49.1
- Last separation: 49.2
- Mag first component: 6.81
- Mag second component: 10.12
- Spectral type: B5III
- Primary proper motion RA: -1
- Primary proper motion DEC: -11
- Secondary proper motion RA: -4
- Secondary proper motion DEC: -6
- Durchmusterung: +29 4342
- Notes: