Quote:
|
Dean, it looks like Cartes du Ciel is incorrect. The event is listed in the tables here at the IMCCE (the premier group for observing these events it would appear) for 08:13-08:18 UTC, which was 18:13 to 18:18 Sydney time, 17:43-17:48 Adelaide time (start to end of penumbral phase). You can reach that page following instructions on this page, which has a lot of useful info and this IMCCE page has a link to description of the column headers. I had a situation earlier this year when I used Stellarium to try and observe an eclipse reappearance of Ganymede, and found I was looking at it 40 minutes too early...
|
Some software uses geocentric rather than topocentric references for anything other than rise and set times. If the object is at the zenith, ie you are on the line between the object and Earth's centre, there is little or no difference. If you are north or south you may get a miss and if you are east/west, you'll get time and parallax offsets. Not sure about the products/web sites measured.
For occultations / NEO's and solar system bodies, the NASA Horizons
http://ssd.jpl.nasa.gov/horizons.cgi
and the Minor Planet & Comet Ephemeris Service
http://www.minorplanetcenter.net/iau/MPEph/MPEph.html
both provide consistent and accurate ephemerides particularly for near Earth bodies. The above sites produce ephemerides for single bodies. It isn't particularly useful for occultations. You would need to produce two sets of data for each body and compare position info to calculate an occultation.