Ephemerides 2.9FIXES:
- fix a bug with the Mercury/Venus conj/opp. months string;
- fix a bug with the markers' behaviour between Ephemerides and "distance_calc" plugins;
- fix a bug with the italian language;
- fix a no-sense link between modules;
CHANGES:
- code rationals, improved performances;
- restored signs for the declinations of the Sun and Earth accordingly with the VSOP87 theory (Celestia's default);
- average abs. magnitude and slope parameter for asteroids and KBO is now sampled upon the complete MPCORB database;
- set the airmass at the ground to its default value of 38.000 (thirtyeight, next is the "infinite and beyond");
- restored the Constellations for all objects;
- moved the "Ecliptic:" item from Sol to Earth;
- button 1 returns to home even when out of the solar system; other buttons will deactivate the markers, if any;
ADD;
- new button/display for objects phenomena. This avoids to drop down length texts on screen;
- general accumulated precession from J2000.0; year before J2000 gets negative numbers (Laskar, 1986);
- perihelion/aphelion and time/distance for the Earth and main Solar System planets. For this latters is assumed
unperturbed elliptical orbits. Accuracy is decreasing from days to year for Mars to Neptune.
- time of the stations; station1 (start retrograde motion), station2 (resume direct motion) for planets Mercury to Saturn;
- degrees' sexagesimal/decimal format option;
- quadrants for planet visibility's azimuth, verbose mode (i.e: "[WNW]"; or "[SE]");
- daily insolation at a given point on the Earth;
- solar activity and polar field status for Sol;
- position angle of the bright limb for all Solar System objects;
- solar and lunar eclipses event catcher;
- update EN-FR-NL-IT languages for the new features;
NOTE:
The real time daily insolation account for the average insolation per latitude measured against the mean longitude (to say, at noon); it shows the change of the solar irradiation accordingly with the orbital path of the Earth (seasons), where the high latitudes receives more irradiation as long as the relevant emispheres are oriented. Because there is no insolation at night, its value drops abruply to zero ("n.a.") once the terminator line is crossed. The variations of the insolation for sunrise/sunset angles are not calculated since it is a mean daily value.
The number of the solar activity against time and its polar field status are the theoretical, yearly accurate, one; there is no way to know by mean of equations the exact moment of the appareance of the first sunspot carrying the new cycle, nor is predictable the precise date of the Sun's polar field inversion unless measured through ground-based and orbital instruments. This latter phenomenon can persist several months in a "hybrid" state before to be definitely accomplished in one verse or in the other.
Attachment:
ephemerides_2.9.zip [95.96 KiB]
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