Tuesday, July 3, 2012

more on Uranus and Neptune at same altitude

Event Date: July 12th
Time: 3:48(.38) AM


NOTE: no double-section today, as the topic is very similar to yesterday's

  This is part two of the Uranus/Neptune same-altitude series I am featuring, ending with this one; it is not the most interesting topic perhaps, so a no-brainer to keep it limited, compared to a Venus-Jupter-Moon grouping, shown last month!  In any case, the two planets' positions on the celestial dome only change by a hair, figuratively speaking.  Therefore, the only thing to really notice is the time above, which is about 3 minutes, 56 seconds earlier than yesterday.  Considering the difference, this makes it more clear why I even bother mention the slight movement of the planets: our stars, particularly those along the celestial equator and ecliptic rise this much earlier each evening, +/- a second depending on the exact declination and where viewed from on Earth.
   Shown below is an image very similar to yesterday's second one with the zoom in.  This time, look at the difference in time and notice that the spacing of the planets between the altitude gridlines are still the same.

click on image to enlarge: courtesy of Starry Night Pro Plus, version 6.4.3, by Simulation Curriculum Corp.









No comments:

Post a Comment