21278+4515
- Unique Name: 21278+4515ES 1335
- RA: 21 27 45.63
- Dec: +45 15 11.6
- Discoverer: ES
- Discoverer Number: 1335
- Components:
- First year: 1914
- Last year: 2011
- Observations: 2
- First position angle: 303
- Last position angle: 288
- First separation: 6.5
- Last separation: 8.1
- Mag first component: 8.74
- Mag second component: 12.3
- Spectral type: A0
- Primary proper motion RA: 35
- Primary proper motion DEC: 13
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +44 3820
- Notes: