21273+4315
- Unique Name: 21273+4315HJ 1646
- RA: 21 27 00.86
- Dec: +43 13 50.9
- Discoverer: HJ
- Discoverer Number: 1646
- Components:
- First year: 1895
- Last year: 2003
- Observations: 7
- First position angle: 119
- Last position angle: 114
- First separation: 21.7
- Last separation: 21.9
- Mag first component: 9.0
- Mag second component: 13.0
- Spectral type: A1V
- Primary proper motion RA: -23
- Primary proper motion DEC: -14
- Secondary proper motion RA: -3
- Secondary proper motion DEC: -6
- Durchmusterung:
- Notes: U
