21209+4002
- Unique Name: 21209+4002LDS2512
- RA: 21 20 55.45
- Dec: +40 01 55.3
- Discoverer: LDS
- Discoverer Number: 2512
- Components:
- First year: 1954
- Last year: 1954
- Observations: 1
- First position angle: 30
- Last position angle: 30
- First separation: 87.0
- Last separation: 87.0
- Mag first component: 9.0
- Mag second component: 20.7
- Spectral type: K5
- Primary proper motion RA: -27
- Primary proper motion DEC: -46
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +39 4528
- Notes: