21540-2642
- Unique Name: 21540-2642B 544
- RA: 21 53 57.40
- Dec: -26 41 50.7
- Discoverer: B
- Discoverer Number: 544
- Components:
- First year: 1929
- Last year: 1991
- Observations: 8
- First position angle: 108
- Last position angle: 106
- First separation: 1.8
- Last separation: 1.8
- Mag first component: 9.74
- Mag second component: 12.38
- Spectral type: G3V
- Primary proper motion RA: 153
- Primary proper motion DEC: -73
- Secondary proper motion RA: 158
- Secondary proper motion DEC: -78
- Durchmusterung: -2715671
- Notes: