21537-1645
- Unique Name: 21537-1645HJ 615AB
- RA: 21 53 41.13
- Dec: -16 45 00.8
- Discoverer: HJ
- Discoverer Number: 615
- Components: AB
- First year: 1827
- Last year: 2004
- Observations: 17
- First position angle: 70
- Last position angle: 67
- First separation: 9.0
- Last separation: 12.4
- Mag first component: 8.43
- Mag second component: 9.44
- Spectral type: F2III
- Primary proper motion RA: 15
- Primary proper motion DEC: 1
- Secondary proper motion RA: 16
- Secondary proper motion DEC: 4
- Durchmusterung: -17 6398
- Notes: