21556+6040
- Unique Name: 21556+6040MLR 509
- RA: 21 55 35.97
- Dec: +60 40 20.5
- Discoverer: MLR
- Discoverer Number: 509
- Components:
- First year: 1980
- Last year: 2008
- Observations: 7
- First position angle: 276
- Last position angle: 273
- First separation: 1.4
- Last separation: 1.5
- Mag first component: 10.4
- Mag second component: 12.2
- Spectral type: B
- Primary proper motion RA: 4
- Primary proper motion DEC: -3
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +59 2434
- Notes:
