21576+4452
- Unique Name: 21576+4452SMA 153
- RA: 21 57 40.32
- Dec: +44 52 08.5
- Discoverer: SMA
- Discoverer Number: 153
- Components:
- First year: 1895
- Last year: 2002
- Observations: 5
- First position angle: 19
- Last position angle: 26
- First separation: 9.9
- Last separation: 10.2
- Mag first component: 11.5
- Mag second component: 11.9
- Spectral type:
- Primary proper motion RA: -8
- Primary proper motion DEC: -7
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -7
- Durchmusterung:
- Notes: