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?

Measurements:

• Artemis' diameter: 15612 km
• Distance from Apollo: 128,620 km
• Angular size: 7 degrees (not that I imagine this would be directly useful)

[If there are any other measurements needed for the problem, please let me know]

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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

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?

Measurements:

• 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