MPEC Orbit Computers¶
The following list, in initial-order, indicates the full names for the orbit computers that appear in abbreviated form on the Daily Orbit Update MPECs.
| Initial | Computer |
|---|---|
| A | David Asher |
| D | Andreas Doppler |
| E | Edward Bowell |
| I | Kiyotaka Ichikawa |
| H | Carl Hergenrother |
| K | Takao Kobayashi (before 2007) |
| K | Sonia Keys |
| M | Brian G. Marsden |
| N | Syuichi Nakano |
| R | Michael Rudenko |
| S | Timothy B. Spahr (= X, before 2000 July 27) |
| U | Takeshi Urata |
| W | Gareth V. Williams |
| X | Minor Planet Center staff or automated process |
| Z | Joachim Schubart |
| e | Maria Eugenia Sansaturio |
| f | Giuseppe Forti |
| g | Edwin Goffin |
| i | Nina K. Sumzina |
| n | Arno Gnadig |
| r | Mike Kretlow |
| s | Piero Sicoli (= S, before 2000 July 27) |
Additional names will be added to this list as necessary.
Other Codes¶
In the column immediately preceding the orbit computer code, there may be a letter indicating that the orbit is e-assumed, that there is a double designation, or both.
| Code | Meaning |
|---|---|
| D | Double designation (new double designations will be listed on the same MPEC) |
| E | Eccentricity was assumed |
| F | = D + E |