21018+3630
- Unique Name: 21018+3630SEI1372
- RA: 21 01 45.22
- Dec: +36 29 47.4
- Discoverer: SEI
- Discoverer Number: 1372
- Components:
- First year: 1896
- Last year: 2002
- Observations: 3
- First position angle: 182
- Last position angle: 181
- First separation: 24.7
- Last separation: 24.8
- Mag first component: 9.54
- Mag second component: 12.3
- Spectral type: A2
- Primary proper motion RA: -5
- Primary proper motion DEC: -6
- Secondary proper motion RA: -7
- Secondary proper motion DEC: -4
- Durchmusterung: +35 4364
- Notes: