21428+1429
- Unique Name: 21428+1429HEI 288
- RA: 21 42 51.94
- Dec: +14 31 36.6
- Discoverer: HEI
- Discoverer Number: 288
- Components:
- First year: 1982
- Last year: 1993
- Observations: 2
- First position angle: 241
- Last position angle: 245
- First separation: 1.3
- Last separation: 1.4
- Mag first component: 11.5
- Mag second component: 11.7
- Spectral type:
- Primary proper motion RA: 17
- Primary proper motion DEC: 30
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +13 4770
- Notes: