Re: JPL Planetary Ephemeris DE405
Hi Dave,
The FTP masters are the final judge, but it looks fine to me. It is
basically free distribution with a requirement to change attributions if
modified.
Cheers,
Walter Landry
Dave Hibberd <d@vehibberd.com> writes:
> Walter,
>
> Thanks for the response - I got in touch with Mr Folkner, and I received the following response:
>
> "We consider the ascii and binary ephemeris files the same SPICE
> kernels that have exactly the same information just in a different
> format. The ephemeris data are then released for public use under the
> following conditions;
>
> https://naif.jpl.nasa.gov/naif/rules.html
>
> See especially sections on Kernels Distribution and Kernels
> Redistribution. The intent is to allow anyone to use or redistribute
> as long as the files/kernels are not modified."
>
> Under my reading of their terms, it feels like a free license we can
> distribute the files under - they permit use, redistribution and
> modification as the user sees fit, and are only looking to limit their
> liability for support of any modified code.
>
> Can anyone confirm or suggest why I may be wrong in this interpretation?
>
> Thanks in advance!
> DH
>
> --
> Hibby
> d@vehibberd.com
>
> On Fri, 23 Feb 2018, at 12:26 AM, Walter Landry wrote:
>> Hibby <d@vehibberd.com> writes:
>> > What I'm here to clarify is that I can't see a license for the ascii
>> > files - I'm not sure if this fileset is something that anyone in
>> > debian-legal have come across, or have any advice on what license they
>> > may have been released under? I can't see anything on the JPL FTP server
>> > outside of the CD Notes from the original release [5]. The contact
>> > detailed on them worked at JPL 21 years ago, and I don't reckon the
>> > email address is still active.
>>
>> There is contact information at the bottom of
>>
>> https://ssd.jpl.nasa.gov/?planet_eph_export
>>
>> It references William Folkner. He published a paper in 2014, so he may
>> still be around.
>>
>> Cheer,
>> Walter Landry
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