21545+1644
- Unique Name: 21545+1644HEI 191
- RA: 21 54 26.76
- Dec: +16 44 39.8
- Discoverer: HEI
- Discoverer Number: 191
- Components:
- First year: 1980
- Last year: 2003
- Observations: 4
- First position angle: 24
- Last position angle: 25
- First separation: 4.8
- Last separation: 6.0
- Mag first component: 10.3
- Mag second component: 11.6
- Spectral type:
- Primary proper motion RA: -10
- Primary proper motion DEC: -13
- Secondary proper motion RA: 25
- Secondary proper motion DEC: 31
- Durchmusterung: +16 4625
- Notes: