21542+2409
- Unique Name: 21542+2409POU5556
- RA: 21 54 08.96
- Dec: +24 09 08.2
- Discoverer: POU
- Discoverer Number: 5556
- Components:
- First year: 1897
- Last year: 2000
- Observations: 2
- First position angle: 146
- Last position angle: 183
- First separation: 2.4
- Last separation: 1.7
- Mag first component: 12.1
- Mag second component: 12.7
- Spectral type:
- Primary proper motion RA: 13
- Primary proper motion DEC: -15
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: