21072+3657
- Unique Name: 21072+3657CTT 16AC
- RA: 21 07 12.26
- Dec: +36 57 00.6
- Discoverer: CTT
- Discoverer Number: 16
- Components: AC
- First year: 1895
- Last year: 2002
- Observations: 7
- First position angle: 255
- Last position angle: 254
- First separation: 29.3
- Last separation: 29.6
- Mag first component: 8.18
- Mag second component: 11.3
- Spectral type: A0
- Primary proper motion RA: 1
- Primary proper motion DEC: 0
- Secondary proper motion RA: 3
- Secondary proper motion DEC: 1
- Durchmusterung:
- Notes: N
