21148+3803
- Unique Name: 21148+3803AGC 13AB,D
- RA: 21 14 47.49
- Dec: +38 02 43.1
- Discoverer: AGC
- Discoverer Number: 13
- Components: AB,D
- First year: 1852
- Last year: 2004
- Observations: 15
- First position angle: 213
- Last position angle: 208
- First separation: 136.9
- Last separation: 205.4
- Mag first component: 3.83
- Mag second component: 9.94
- Spectral type: F3V
- Primary proper motion RA: 196
- Primary proper motion DEC: 410
- Secondary proper motion RA: 0
- Secondary proper motion DEC: -5
- Durchmusterung: +37 4237
- Notes: NLD
