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Hi Brandon and Elwood, I'd like to join in on the chorus of people thanking you for keeping this software package alive. I had recently reformatted my computer, and after seeing this release

Thank you Brandon and Elwood! I compiled and installed this new version of xephem the same day was released. From 1996 I have been doing this with every version. The new 4.2.0 release comes to

"Brandon Rhodes" <brandon@...> wrote: Thanks for keeping this venerable software alive! It was one of the first software packatges I compiled for X Windows back in 1991 or so on a Sun

Thank you Brandon and Elwood!, this new release brings a new life for all of us!I will install on my FreeBSD 14.0 Box right away! Greetings from Mérida, Yucatán, México, The Maya Land! Eric.

Thank you very much for the new release, Brandon! And many congratulations on the new version. :) -- With best regards, Alexander

Thanks so much, Brandon. Bernie NASA/IRTF

Thanks Brandon, It's nice to see official releases again for this great software. Your efforts are appreciated! Don

Many thanks to Brandon for his excellent stewardship and to everyone for their valuable contributions. Long live XEphem! Elwood wrote:

I have just released XEphem 4.2.0. https://github.com/XEphem/XEphem/releases/tag/4.2.0 The change log: - Elwood himself has contributed a new option that lets you switch XEphem from giving

Dear Elio, Thank you again for your advice! Yours, Maxime -- Maxime GOMMEAUX, ma?tre de conférences - Affiliation: Université de Reims Champagne-Arden

I agree with you. I have not xephem installed and cannot verify, but apparently EcLong is what I named geocentric ecliptic longitude. Of course EcLong is more strictly related with observations made

Dear Elio, Thank you for putting me on the right track! I can't see on XEphem the exact "geocentric longitude" that you mention but in Data Table, I can display the heliocentric latitude/longitude

of Mars using only data from XEphem-simulated ground-based observations. I mean, from Sky view, from the Data table... and of course not from the Solar system view. I have not being using xephem for

Dear friends of XEphem, I would like to have my Bachelor students estimate the orbital period of Mars using only data from XEphem-simulated ground-based observations. I mean, from Sky view, from the

Hello, I have few questions about the settings to compare ephemeris generated by XEphem and almanac data. Times are calculated for upper limb or sun center crossing the horizon? Atmosphere pressure: 0

Thanks to all have contributed to help me visualize why the moon elongation from the sun is only rarely approaching 0 or 180 degrees. stefano

I will not go beyond your first line. First, the ecliptic is not a plane. Neither it is Earth's orbit, as some believe. The ecliptic is a great circle on the celestial sphere. From a geocentric point

It is true that, on new moon, the projection of the Sun-Earth-Moon angle is zero, but I think that the elongation is defined as the actual angle, not the projected angle. The elongation will be zero

The ecliptic is the "mean invariant plane" of the solar system. The solar system consists of the Sun, Jupiter and other debris! So the Earth can be slightly above/below the mean plane (timescales on

My astronomy professor did quite well with a rubber ball and a flashlight, but try Wikipedia. I wrote a program showing how it works once. <s.bortolussi@...> wrote: