21021+3246
- Unique Name: 21021+3246ES 2357
- RA: 21 02 03.49
- Dec: +32 46 16.6
- Discoverer: ES
- Discoverer Number: 2357
- Components:
- First year: 1893
- Last year: 2007
- Observations: 8
- First position angle: 335
- Last position angle: 335
- First separation: 9.7
- Last separation: 9.4
- Mag first component: 9.89
- Mag second component: 11.4
- Spectral type: G5
- Primary proper motion RA: 10
- Primary proper motion DEC: 14
- Secondary proper motion RA: 8
- Secondary proper motion DEC: 12
- Durchmusterung: +32 4028
- Notes: