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AstroTime.jl represents an epoch as a julian day value separated in 2 float64 numbers jd1 and jd2: jd1+jd2.
While in theory this representation can allow a sub-nanosecond accuracy for contemporary ep…
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We confronted the out of memory allocating even after set the COMPILE_HIGH_ACCURACY_ESTIMATION_TESTS variable to off. My system is win 64 bit. Followings are the compile output
15:53:30: 为项目Tud…
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The NAIF has many ephemerides available for natural satellites of other planets:
https://naif.jpl.nasa.gov/pub/naif/generic_kernels/spk/satellites/
However the loader is unable to find most of t…
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Dear Dr. Gatti
I have tried Nightly version and running well but first I receive the message :
[ ok ] Home dir is present
[ ok ] Observation dir is present
** Checking RINEX input files…
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As far as I know, spring equinox of year 2016 is '2016-3-20 4:30'.
I check it in [HORIZONS Web](http://ssd.jpl.nasa.gov/horizons.cgi#top), get result as follows
```
Date__(UT)__HR:MN ObsEcLon…
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🐞 **Problem**
(This came from user feedback)
We have been tackling several issues regarding reference frames lately (see #215, #222, #243, #245) and we are already thinking in integrating `Orbit…
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**I am currently creating a new application within Tudat. To check whether the setup works I just copied example program (inner solar system) into a file (thesis.cpp). However, no matter what I get th…
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I have a question regarding epochs. I want to show the night sky as a super-ancient observer would see it or someone in the far flung future. Should I set the year _and_ epoch to be the same?
I have …
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Currently only the internal calculations are used. To achieve higher precision, it is necessary to load external data files.
rstub updated
6 years ago
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Downloading entire ephemerides takes up a lot of time and space. As it turns out, NASA's servers support HTTP/1.1 byte range requests. For example:
curl -o test.txt -r 120000000-130000000 ftp://ssd.…