21030+3549
- Unique Name: 21030+3549SEI1378
- RA: 21 03 02.53
- Dec: +35 48 24.6
- Discoverer: SEI
- Discoverer Number: 1378
- Components:
- First year: 1896
- Last year: 2002
- Observations: 3
- First position angle: 222
- Last position angle: 222
- First separation: 27.9
- Last separation: 28.9
- Mag first component: 12.44
- Mag second component: 13.09
- Spectral type:
- Primary proper motion RA: 2
- Primary proper motion DEC: 0
- Secondary proper motion RA: -3
- Secondary proper motion DEC: -6
- Durchmusterung:
- Notes: