21072+4744
- Unique Name: 21072+4744ES 817AD
- RA: 21 07 13.36
- Dec: +47 44 03.5
- Discoverer: ES
- Discoverer Number: 817
- Components: AD
- First year: 1909
- Last year: 1999
- Observations: 2
- First position angle: 85
- Last position angle: 84
- First separation: 24.0
- Last separation: 23.9
- Mag first component: 7.33
- Mag second component: 14.2
- Spectral type: A2V
- Primary proper motion RA: 7
- Primary proper motion DEC: 9
- Secondary proper motion RA: 0
- Secondary proper motion DEC: 2
- Durchmusterung:
- Notes:
