21240+4611
- Unique Name: 21240+4611SKF1391
- RA: 21 23 58.62
- Dec: +46 10 56.9
- Discoverer: SKF
- Discoverer Number: 1391
- Components:
- First year: 1952
- Last year: 2010
- Observations: 6
- First position angle: 154
- Last position angle: 154
- First separation: 29.8
- Last separation: 29.5
- Mag first component: 13.12
- Mag second component: 13.9
- Spectral type: K:
- Primary proper motion RA: 34
- Primary proper motion DEC: 0
- Secondary proper motion RA: 33
- Secondary proper motion DEC: 0
- Durchmusterung:
- Notes: V