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I wrote a program to compute constellation values and used hygdata to check my program's accuracy. In a few cases, my program gave a different constellation, so I used Stellarium to break the tie, and…
ghost updated
12 months ago
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A bug in fraction_illuminated() on Venus?
It worked well in the skyfield for the moon using fraction_illuminated(). But when I tried to do it on Venus, the results were completely wrong and weird. …
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i am trying to calculate the exact degree of planets on the zodiac by pyephem but i faced with some problems. i need to extract the amounts with high accuracy . i made it better by changing Epoch valu…
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Hi,
I implemented VSOP87 and ELP2000-82B to calculate sun and moon geocentric positions, and wanted to validate my implementations against JPL ephemerides. Out of convenience, I used skyfield. Ever…
bsics updated
2 years ago
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It would be nice to adapt the existing gravity integrator used for calculating Pluto's orbit to allow calculating the trajectory of asteroids, comets, coasting spacecraft, or other small bodies travel…
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I have the Ephemeris library installed from the Library Manager (not manually from git) and it is the latest available version.
When compiling, I get the following errors, and much much more of the…
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First off, hats off for putting in the time and effort to create this clean port of _meeus_! :clap:
Lately I've been playing a bit with [Observable](https://beta.observablehq.com/) but I've had som…
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Not a lawyer here, but I'm pretty certain this violates the IAU license as they do not allow distrubution of modified souce.
But, I would hope it's an easy fix though. The ERFA lib is an exact cop…
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What is the correct way to calculate the angular diameter of a planet visible in the sky? Especially when it is close to the horizon.
I'm trying to calculate it with the regular formula:
```
a_…
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在參閱作者的[農曆編算方法](https://ytliu0.github.io/ChineseCalendar/computation_simp.html)檔案時,看到您在使用[牛頓-拉弗森](https://zh.wikipedia.org/zh-cn/%E7%89%9B%E9%A1%BF%E6%B3%95)對節氣和月相求根的時候先根據指定的時刻 t0 推算出 t1。
這裏晚輩有一個疑問,…
ghost updated
4 years ago