21278+3715
- Unique Name: 21278+3715SEI1518
- RA: 21 27 43.85
- Dec: +37 14 59.4
- Discoverer: SEI
- Discoverer Number: 1518
- Components:
- First year: 1895
- Last year: 2011
- Observations: 7
- First position angle: 142
- Last position angle: 144
- First separation: 14.6
- Last separation: 15.5
- Mag first component: 10.36
- Mag second component: 10.97
- Spectral type:
- Primary proper motion RA: -6
- Primary proper motion DEC: -2
- Secondary proper motion RA: -3
- Secondary proper motion DEC: -13
- Durchmusterung:
- Notes: N
