21048+3531
- Unique Name: 21048+3531S 773AB
- RA: 21 04 45.64
- Dec: +35 30 39.1
- Discoverer: S
- Discoverer Number: 773
- Components: AB
- First year: 1824
- Last year: 2004
- Observations: 15
- First position angle: 30
- Last position angle: 31
- First separation: 84.0
- Last separation: 85.9
- Mag first component: 9.11
- Mag second component: 9.58
- Spectral type: M0
- Primary proper motion RA: 0
- Primary proper motion DEC: 4
- Secondary proper motion RA: 15
- Secondary proper motion DEC: 17
- Durchmusterung: +34 4264
- Notes: N