In the project I am currently working on, I am making a world in a binary orbit with another similarly-sized planet. The two planets, which I have so far been referring to as Artemis and Apollo (unrelated to NASA lol) orbit each other at zero degrees relative to their star, meaning that: first, there are no seasons, but second, and more importantly, that a certain region of the planet will experience daily eclipses. I tried looking around for online calculators to get the size of a planet's shadow, but couldn't find anything, but, I do (hopefully) have all the measurements necessary to do so.
As a side note, the main planet in this problem is the one I've been calling 'Apollo,' meaning; How big of a shadow would Artemis cast on Apollo?
- Artemis' diameter: 15612 km
- Distance Between Planets: 128,620 km
- Angular size: 7 degrees (not that I imagine this would be directly useful)
- Star Diameter: 1.64 million km / 1.18x The Sun
- Distance from Star: 221.4 million km / 1.481 AU (Measured from barycenter of Ap & At to Star)
Random Probably Useless Facts:
'Artemis' takes up 7 degrees of the sky on 'Apollo', which is 14 times larger than the Moon in our sky
I've been calling them Artemis and Apollo because the two gods are twins in Greek Mythology, just like the twin planets of their star system
After several years I still haven't come up with any actual names of the planets