21157-2803
- Unique Name: 21157-2803BRT3099
- RA: 21 15 11.89
- Dec: -28 02 41.9
- Discoverer: BRT
- Discoverer Number: 3099
- Components:
- First year: 1913
- Last year: 2000
- Observations: 4
- First position angle: 300
- Last position angle: 297
- First separation: 3.4
- Last separation: 4.8
- Mag first component: 11.99
- Mag second component: 12.77
- Spectral type:
- Primary proper motion RA: 18
- Primary proper motion DEC: -3
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: B
