Sources
| Abbr. | Description |
| 5 | |
| MPC | IAU Minor Planet Center, http://www.minorplanetcenter.org/iau/mpc.html |
| NASA_JPL | NASA Jet Propulsion Laboratory, http://ssd.jpl.nasa.gov/?satellites |
| NASA_GSFC | NASA Goddard Space Flight Center, http://nssdc.gsfc.nasa.gov/planetary/planetfact.html |
| ESA_ESTEC | ESA European Space Research and Technology Centre |
| EARN | see Earn References |
| ESA_ESOC | MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA |