21481+2100
- Unique Name: 21481+2100HU 378
- RA: 21 48 03.49
- Dec: +20 59 39.1
- Discoverer: HU
- Discoverer Number: 378
- Components:
- First year: 1901
- Last year: 2010
- Observations: 18
- First position angle: 346
- Last position angle: 297
- First separation: 0.6
- Last separation: 0.2
- Mag first component: 9.0
- Mag second component: 9.8
- Spectral type: G5
- Primary proper motion RA: 35
- Primary proper motion DEC: 25
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +20 5016
- Notes: