21529-2152
- Unique Name: 21529-2152DON1120
- RA: 21 52 56.53
- Dec: -21 52 28.4
- Discoverer: DON
- Discoverer Number: 1120
- Components:
- First year: 1929
- Last year: 1999
- Observations: 3
- First position angle: 214
- Last position angle: 212
- First separation: 7.8
- Last separation: 8.2
- Mag first component: 10.33
- Mag second component: 14.1
- Spectral type: G5V
- Primary proper motion RA: -26
- Primary proper motion DEC: -33
- Secondary proper motion RA: -38
- Secondary proper motion DEC: -32
- Durchmusterung: -22 5784
- Notes: