21121-4128
- Unique Name: 21121-4128BVD 153
- RA: 21 12 08.84
- Dec: -41 27 50.4
- Discoverer: BVD
- Discoverer Number: 153
- Components:
- First year: 1902
- Last year: 1999
- Observations: 6
- First position angle: 132
- Last position angle: 132
- First separation: 44.4
- Last separation: 44.1
- Mag first component: 10.21
- Mag second component: 11.13
- Spectral type: F5V F6V
- Primary proper motion RA: 58
- Primary proper motion DEC: 14
- Secondary proper motion RA: 61
- Secondary proper motion DEC: 13
- Durchmusterung:
- Notes: V