21000+3655
- Unique Name: 21000+3655SEI1360AB
- RA: 21 00 04.10
- Dec: +36 55 03.1
- Discoverer: SEI
- Discoverer Number: 1360
- Components: AB
- First year: 1896
- Last year: 2011
- Observations: 5
- First position angle: 44
- Last position angle: 45
- First separation: 23.0
- Last separation: 21.8
- Mag first component: 11.21
- Mag second component: 13.2
- Spectral type:
- Primary proper motion RA: -1
- Primary proper motion DEC: -8
- Secondary proper motion RA: -5
- Secondary proper motion DEC: -12
- Durchmusterung:
- Notes: