21284-1715
- Unique Name: 21284-1715RST3285
- RA: 21 28 21.65
- Dec: -17 15 28.2
- Discoverer: RST
- Discoverer Number: 3285
- Components:
- First year: 1935
- Last year: 1943
- Observations: 2
- First position angle: 241
- Last position angle: 241
- First separation: 2.8
- Last separation: 2.5
- Mag first component: 8.6
- Mag second component: 14.0
- Spectral type: A1V
- Primary proper motion RA: 2
- Primary proper motion DEC: -14
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: -17 6288
- Notes: