Quick facts
Parent planet
Diameter (mean)
4 km
Mass
1.2 × 10¹⁴ kg
1.6e-09 Moon masses
Mean orbital radius
21,105,000 km
Orbital period
624.5 Earth days
Discovery year
2000
Discoverer
Scott S. Sheppard et al.
Naming origin
Greek lover of Zeus
Surface conditions
Harpalyke is a 4-km retrograde irregular in the Ananke group, named in 2003.
Missions and observations
Every Jupiter-system mission has had an opportunity to image or characterize Harpalyke. The list below is the Jupiter-system mission catalog; specific Harpalyke encounters are documented in mission archives.
| Mission | Year at Jupiter | Status |
|---|---|---|
|
Pioneer 10 NASA |
1973 | Completed |
|
Pioneer 11 NASA |
1974 | Completed |
|
Voyager 1 NASA |
1979 | Completed |
|
Voyager 2 NASA |
1979 | Completed |
|
Ulysses NASA/ESA |
1992 | Completed |
|
Galileo NASA |
1995 | Completed |
|
Cassini-Huygens NASA/ESA/ASI |
2000 | Completed |
|
New Horizons NASA |
2007 | Completed |
|
Juno NASA |
2016 | Active |
|
Europa Clipper NASA |
2030 | On the way |
|
JUICE ESA |
2031 | On the way |
Naming etymology
Harpalyke was a Thracian lover of Zeus. Adopted by the IAU in 2003.
Methodology & sources
Diameter, mass, and orbital parameters from JPL Solar System Dynamics — Physical Parameters. Discovery year and discoverer from the JPL Satellite Discovery Circumstances. Naming etymology from the IAU Working Group for Planetary System Nomenclature. Stylized SVG hero composed from NASA / JPL imagery as visual reference; no photographs are reproduced.