 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Microcontroller and PC projects : MMX - Transits of Mercury and Venus
| Author | Message | ||||
| cdeagle Senior Member  Joined: 22/06/2014 Location: United StatesPosts: 261 |
This MMBASIC program for the MicroMite eXtreme and Raspberry Pi can be used to predict the local circumstances of transits of Mercury and Venus across the face of the Sun relative to an Earth observer. Information about transits in the past and future can be found at EclipseWise. Here's the output from a typical user interaction with the transit.bas software. transits of Mercury and Venus ============================= <1> Mercury <2> Venus please input the planet of interest ? 1 please input the calendar date (month [1 - 12], day [1 - 31], year [yyyy]) < for example, october 21, 1986 is input as 10,21,1986 > < b.c. dates are negative, a.d. dates are positive > < the day of the month may also include a decimal part > ? 5,1,2016 please input the geographic latitude of the observer (degrees [-90 to +90], minutes [0 - 60], seconds [0 - 60]) (north latitudes are positive, south latitudes are negative) ? 39,40,36 please input the geographic longitude of the observer (degrees [0 - 360], minutes [0 - 60], seconds [0 - 60]) (east longitude is positive, west longitude is negative) ? -104,57,12 please input the altitude of the observer (meters) (positive above sea level, negative below sea level) ? 1644 please input the search duration in days ? 30 searching for transit conditions ... ingress - exterior contact - Mercury ------------------------------------ calendar date May 9 2016 UTC time 11 hours 12 minutes 11.63 seconds UTC julian day 2457517.96680127 topocentric coordinates of the Sun azimuth angle 59 deg 47 min 36.72 sec elevation angle -7 deg 26 min 27.89 sec least distance of the Sun and Mercury ------------------------------------- calendar date May 9 2016 UTC time 14 hours 57 minutes 23.42 seconds UTC julian day 2457518.12318772 topocentric coordinates of the Sun azimuth angle 95 deg 10 min 29.66 sec elevation angle 34 deg 15 min 12.38 sec engress - exterior contact - Mercury ------------------------------------ calendar date May 9 2016 UTC time 18 hours 42 minutes 27.31 seconds UTC julian day 2457518.27948281 topocentric coordinates of the Sun azimuth angle 171 deg 18 min 37.76 sec elevation angle 67 deg 44 min 23.62 sec event duration 7 hours 30 minutes 15.68 seconds Here's the link to a zipped file with the MMBASIC source code and a PDF user's manual for the MATLAB version. 2017-06-28_214054_transit.zip |
||||
 Print this page |
