21187+4428
- Unique Name: 21187+4428LDS2507
- RA: .
- Dec: .
- Discoverer: LDS
- Discoverer Number: 2507
- Components:
- First year: 1954
- Last year: 1954
- Observations: 1
- First position angle: 182
- Last position angle: 182
- First separation: 3.0
- Last separation: 3.0
- Mag first component: 19.6
- Mag second component: 20.8
- Spectral type:
- Primary proper motion RA: 1
- Primary proper motion DEC: 39
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: X
