21530+4121
- Unique Name: 21530+4121GRV 516
- RA: 21 53 05.28
- Dec: +41 21 20.0
- Discoverer: GRV
- Discoverer Number: 516
- Components:
- First year: 1895
- Last year: 2002
- Observations: 6
- First position angle: 152
- Last position angle: 152
- First separation: 14.4
- Last separation: 14.3
- Mag first component: 10.0
- Mag second component: 11.7
- Spectral type:
- Primary proper motion RA: 39
- Primary proper motion DEC: 10
- Secondary proper motion RA: 38
- Secondary proper motion DEC: 10
- Durchmusterung: +40 4661
- Notes: