------------------------------------------------------------------ Celestial Mechanics Department ---------------------------------- --------------------------- Sternberg State Astronomical Institute ------------------------------------------------------------------ System : Monitor Of Natural Satellites (MONS) Subsystem: EPHemerides (EPH) Version: 1.06 /October 1995/ MONS-EPH Copyright (c) 1994, 1995 Sternberg State Astronomical Institute See also files: user_man, fileinfo, install. ------------------------------------------------------------------ The program is compiled with Borland C++ 4.0 software. The copy of the Borland C++ 4.0 package is bought by celestial mechanics department of SSAI and registered at Moscow office of Borland. This version of the program is distributed free of charge and not for commercial use. -------- Features of this version -------------------------------- ... as compared to the version 1.05 (Version history see below) 1. Some mirror orientation of the field of view are possible. 2. The scale of the field of view may be specified arbitrary by user while dialogue. 3. The graphic images of the field of view may be printed on a laser printer via PostScript format. 4. Mode of output (file-printer, printer type) as well as the list of the data to be outputted while event detecting may by specified by user while dialogue. ... as compared to the version 1.04 (Version history see below) 1. More simple set of distributed files of the software ready to use. No installation procedure. 2. The more precise model of planet motion in the case of working without DE200 ephemerides. 3. Corrected file for Iapetus motion theory. 4. Debug options. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � TO PLAY THE EPHEMERIS OF THE MUTUAL PHENOMENA OF THE � � SATELLITES DELETE FROM CONSIDERATION THE FAINT SATELLITES � � OTHERWISE THEY WILL DISTURB THE PICTURES. (Use the program � � built-in tools while dialogue. Read the case sensitive � � prompt being called by the F1 key.) � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� ------------------------------------------------------------------ ---------- Information to contact with the author -------------- ------------------------------------------------------------------ Emelianov N.V. Sternberg State Astronomical Institute Universitetskij prosp. 13 119899 Moscow Russia ------------------------------------------------------------------ Phone (7 095) 939-16-50 E-mail: emelia@sai.msu.su ------------------------------------------------------------------ THE MOST ITERESTING FEATURES OF THE PROGRAM The program is the best: - as an ephemeride source and suitable help for observations of natural satellites, - to get seeing conditions of a planet for a specified observatory, - to see apparent motions and positions of natural satellites - to play back and see all mutual phenonmena of satellites - to predict mutual occultations and eclipses of satellites - to observe the view of satellite system like with a telescope The program shows the following phenomena: - apparent disks of a planet and its satellites - motion and orbits of satellites - entry of a satellite into the planet shadow - passage of a satellite through the planet's surface - apparent intersection of the disks of two satellites - the rings of Saturn - the shadow fallen on the rings The program allows to play back sequentially all mutual phenomena - of the main satellites of Saturn (1995-1996) - of the galilean satellites of Jupiter (1997-1998). ------------------------------------------------------------------ HISTORY OF VERSIONS THE FEATURES OF THE VERSION 1.04 (in contrast of the version 1.02) 1. Some errors were eliminated. 2. The precise theory of Galilean satellites of Jupiter (by Lieske, 1991, e-3) is realized. Now the precision of the calculation of the apparent angular coordinates of Galilean satellites is of about 0.02 arcsec. 3. Mutual phenomena of Galilean satellites in 1997-1998 are calculated. The time moment tables of the events are included to the program to reproduce the events on the screen automatically. The tables are different for saturnian and Galilean satellites and switched automatically. Events are reproduced in a proper view automatically when the moment is called from the table. 4. The saturnian satellites Helene, Telesto, Calypso, are placed at the libration points L4, L5 of the systems Saturn-Dione and Saturn-Tethys correspondingly. The saturnian satellites Janus and Epimetheus are placed on the same orbit at the opposite points. 5. The system Pluto-Charon is included to the software. 6. The minimal size of the field of view reached to 1 arcsec. 7. The images of the satellites are disks when necessary. The intersections of the satellite disks are displayed while mutual phenomena occur. 8. The depth of the magnitude of satellites during the mutual phenomena is displayed on the screen. 9. The case sensitive help is valid at any instant. 10. The orientation of the field of view is designated on the screen and it may be toggled to be overturned. 11. One may switch on playing the picture at the real time according to the computer clock. 12. The center of the field may be fixed at any of satellites while time moments are changed. 13. The rings of Saturn are displayed as well as the shadow of the planet falling on the rings. 14. The local (topocentric) angular coordinates of a planet are displayed on the screen for a chosen observatory. THE FEATURES OF THE VERSION 1.05 (in contrast of the version 1.04) 1. More simple set of distributed files of the software ready to use. No installation procedure. Various compatible variants of the set of the software files as the situation requires. 2. The more precise model of planet motion in the case of working without DE200 ephemerides. The precision for geocentric coordinates of the planets without DE200 ephemerides is: Mars - 60 arcsec, Jupiter - 0.9 arcsec, Saturn - 0.9 arcsec, Uranus - 7 arcsec, Neptune - 15 arcsec, Pluto - 0.4 arcsec. 3. Corrected file for Iapetus motion theory according to the paper by D.Harper and D.B.Taylor, Astronomy and Astrophys. 284, 619-628 (1994). 4. Debug options. To get some intermediate data of satellite coordinates tape in command line switches [-d [-l]]. THE FEATURES OF THE VERSION 1.06 (in contrast of the version 1.05) 1. Some bugs were eliminated. In particular, now the precision for geocentric coordinates of Mars without DE200 ephemerides is 0.9 arcsec. 2. Some mirror orientation of the field of view made to be possible in use. 3. Thanks to kindly advise by Dr D.Harper some new possibilities were made. a) The scale of the field of view may be specified arbitrary by user while dialogue. b) The graphic images of the field of view may be printed on a laser printer via PostScript format. 4. Mode of output (file-printer, printer type) as well as the list of the data to be outputted while event detecting may by specified by user while dialogue. ------------------------------------------------------------------