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This will be used to make a list of SPICE tools that are required for instrument processing.
List:
- time utils
- position and velocity calculations
- transform position vector between reference fram…
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I propose to replace the `swisseph` library with [`Skyfield`](https://pypi.org/project/skyfield/) for astronomical calculations within the jyotisha package. This change aims to enhance the accuracy, e…
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Now that we have high-res imagery, it would be great to add Ceres as a destination in solar system mode. It's almost a perfect sphere, so it shouldn't cause problems there. And, as the largest object …
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So, I'm trying to follow the readme on getting az/el for a sidereal source with the new methods and am running into some issues.
I'm trying
```c
#include "novas.h"
#include "solarsystem.h"
#inc…
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# High level description
As per https://github.com/rtk-rs/gnss-rtk/pull/16#issuecomment-2191139310 and https://github.com/georust/rinex/pull/252#issuecomment-2191068530, air gaped systems can't use…
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Hello,
I was wondering if it would be possible to add an object (for example, a probe) to the system that has a velocity and direction and is bound to gravitational influences?
For example: Insert a…
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### Background
In 2020, the United States Space Force released an implementation of the SGP4-XP propagator, a more accurate version of the standard SGP4, which is claimed to deliver accuracy comparab…
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Hi
I was wondering: if we know the geocentric coordinates of the sun and one planet (longitude and distance) in one instant only, can we calculate/know mathematically if the planet is in retrograde…
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For different position(like in London or in NewYork) it should get different result when using "calc_ut()", so anyone knows how to change the specific position? I don't see any parameters in the funct…
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The experimental igv\* product delivers precise ephemerides for GPS and GLONASS simultaneously. When I use this product for GPS it gives the same corrrection as the igu product as it should.
When I…