07:50 <_whitenotifier-81d9> [Principia] pleroy closed pull request #3411: Fix a compilation error - https://github.com/mockingbirdnest/Principia/pull/3411

11:49 <queqiao-> ⟨Mayo⟩ I am looking for frozen orbits around the moon

11:50 <queqiao-> ⟨Mayo⟩ My lunar probes decay too fast for long term science in low orbit

11:50 <queqiao-> ⟨Mayo⟩ Ice cream?

11:50 <queqiao-> ⟨leudaimon⟩ look at the pinned post by egg here

11:50 <queqiao-> ⟨Mayo⟩ Oh

11:50 <queqiao-> ⟨Mayo⟩ Alright cheers

11:50 <queqiao-> ⟨Mayo⟩ 65 degrees

11:50 <queqiao-> ⟨leudaimon⟩ read the thing.... it's not so simple

11:50 <queqiao-> ⟨Soviet Onion⟩ there are a few others too

11:51 <queqiao-> ⟨Soviet Onion⟩ 27deg, 50deg, 76deg, 86deg

11:54 <queqiao-> ⟨test_account⟩ But what is a on these graphs

11:54 <queqiao-> ⟨leudaimon⟩ semi major axis

11:55 <queqiao-> ⟨test_account⟩ so it has to be very eccentric and not very much time will be spent in low orbit anyway

11:56 <queqiao-> ⟨test_account⟩ or wait, 1863 is maybe not so much

11:56 <queqiao-> ⟨test_account⟩ wait, are those circular orbits??

11:57 <queqiao-> ⟨leudaimon⟩ "Fig. 2. Inclination-eccentricity diagrams of non-impact, frozen, low lunar orbits under perturbations of the Moon zonal harmonics and the Earth third-body effect. Full line: 50×0 truncation. Dashed line: 100×0 truncation. From top to bottom, the altitude of the circular orbits is 150, 125, 100, 75, and 50 km over the surface of the Moon."

11:57 <queqiao-> ⟨leudaimon⟩ https://www.sciencedirect.com/science/article/pii/S009457651100066X

11:58 <queqiao-> ⟨Soviet Onion⟩ ⟪test_account⟫ so it has to be very eccentric and not […] ⮪ Semi-major axis doesn't say much about semi-minor axis :3

11:58 <queqiao-> ⟨test_account⟩ i forgot the number also includes the radius of the Moon, which is inside the orbit...

11:59 <queqiao-> ⟨test_account⟩ so the altitude is exactly ~100km

11:59 <queqiao-> ⟨Soviet Onion⟩ Indeed

12:00 <queqiao-> ⟨Soviet Onion⟩ I find it very interesting how frozen orbits played a big role in PFS-1's and PFS-2's orbits

12:05 <queqiao-> ⟨Mayo⟩ ⟪test_account⟫ so the altitude is exactly ~100km ⮪ oh good

17:34 <queqiao-> ⟨flyboy463⟩ Apologies if this is a dumb question, but has anyone installed principa mid career in RO/rss? From my understanding of the FAQ for principa it'll likely result in a bad time for any flybys, but I was curious about vessels in orbit around bodies

17:35 <queqiao-> ⟨leudaimon⟩ vessels in orbit should be fine. Just if you're transfering that you'll have a problem, as your target won't be where you think

17:37 <queqiao-> ⟨flyboy463⟩ Thanks! Looks like I have something fun to look forward to when I get off work

20:33 <queqiao-> ⟨Black Foxy - thanks everybody⟩ https://matrix.mockingbirdnest.com/_matrix/media/r0/download/matrix.mockingbirdnest.com/ANtKGtXgNmwcXbqDcyoTASwi/unknown.png

20:33 <queqiao-> ⟨Black Foxy - thanks everybody⟩ the cyclic moon-earth-3petal thingy seems possible \ o /

20:33 <queqiao-> tho damn everything is so finicky with like how tiny margins decide how it will look