About Solar system Planets , Comets
Anglais puis Francais
Planets and comets and some constellations of ecliptic (for tablets)
The software shows the planets of the solar system in their actual position (mercury neptune) at the beginning of the program the display is the current date. For comets you can see where is Halley (N°232) or 67P Churyumov-Gerasimenko (N° 291) which is now near the orbit of Mars ; Today (5/8/2015) to can find it , in the night ,based on the screen, you see the moon , the comet is in direction of your left hand in the ecliptic.
Pressing "+" advances the time and moves the planets; more pressing accelerate the movement "long" pressing increase the increment of the movement, pressing "Stop" stops the movement; pressing "-" set back the time
A short press "Today / Day" returns to date; Long press "Today / Day" can choose a date in the format "MM * dd * yy * hh" an example "04 * 15 * 15 * 12" gives 15 April 2015 at 12 noon (Greenwich Mean Time)
Pressing the image of the comet can choose among hundreds of comets in a drop down table; the name and the inclination of the orbit of the comet are indicated in the window "Scale"; pressing on the image of the comet clears the comet. The inclination of the plane in which evolves the comet is indicated because some have an important angle to the mean plane in which the planets evolve; for example, the comet No. 2 "Hale Bopp" which is roughly perpendicular to the plane of the solar system
Initially, the scale is that of the Mars planet; it is possible to set the scale to Saturn by pressing the key or make Neptune's scale; the trajectories remain the real scale
Long press "Stop" to display distances from the earth or sun astronomical expressed as a unit or Km
The line through the sun is the origin of the heliocentric repere a fixed inclined line gives the position of the perihelion of the Earth (January 4) and a line gives the earth-moon axis to easily spot the planets in relation to the position of the moon (in the ecliptic plane)
To see the constellations of ecliptic touch again button scale , retouch for back
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Planetes et cometes et quelques constellations de l'ecliptique (pour tablettes)
Le logiciel montre les planetes du systeme solaire dans leur position reelle (de mercure a neptune) ; au debut du programme l'affichage est celui de la date du jour
Un appui court sur "ToDay/Day" fait revenir a la date du jour ; un appui long sur "ToDay/Day"permet de choisir une date au format "MM*dd*yy*hh" , en exemple "04*15*15*12" donne le 15 Avril 2015 a 12 heures (heure de Greenwich)
Un appui sur l'image de la comete permet de choisir parmis plusieurs centaines de cometes dans un tableau deroulant; le nom et l'inclinaison de l'orbite de la comete sont indiques dans la fenetre "Scale" ; un appui sur l'image de la comete efface la comete . L'inclinaison du plan dans lequel evolue la comete est indiquee car certaines ont un angle important par rapport au plan moyen dans lequel evoluent les planetes ; en exemple , la comete N.2 "Hale Bopp" qui est a peu pres perpendiculaire au plan du systeme solaire
Au depart , l'echelle est celle de la planete Mars ; il est possible de mettre l'echelle a Saturne par appui sur la touche ou de mettre a l'echelle de Neptune ; les trajectoires restent a l'echelle reelle
Un appui long sur "Stop" permet d'afficher les distances par rapport a la terre ou au soleil exprimees en unite astronomiques ou en Km
La ligne qui passe par le soleil est l'origine du repere heliocentrique , une droite fixe inclinee donne la position du perihelie de la terre (le 4 janvier)et une ligne donne l'axe terre lune pour facilement reperer les planetes par rapport a la position de la lune (dans le plan ecliptique)
Pour voir des constellations de l'ecliptique , retoucher le bouton d'echelle ; toucher à nouveau pour effacer
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by Y####:
The only one I have found that allows you to enter a date ! Just the job ,However putting in my birthday is another matter. Perhaps a + - 50 year button would be of advantage or the ability to save the that year when located ? PLEASE.