Editing Talk:2707: Astronomy Numbers
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:: ...my conclusion after doing a couple is that we're not going to be satisfied automating (at least with the prompt I was using from here) but it's a useful tool for producing simple explanations if operated manually. [[Special:Contributions/172.71.158.217|172.71.158.217]] 17:54, 7 December 2022 (UTC) | :: ...my conclusion after doing a couple is that we're not going to be satisfied automating (at least with the prompt I was using from here) but it's a useful tool for producing simple explanations if operated manually. [[Special:Contributions/172.71.158.217|172.71.158.217]] 17:54, 7 December 2022 (UTC) | ||
β | Why is it as big as 65 mph? Where did the 65 mph figure have come from? A formula? Taking a linear change from minimum velocity (-500 m/s 12 weeks earlier), 4 days before the perihelion gives 86 | + | Why is it as big as 65 mph? Where did the 65 mph figure have come from? A formula? Taking a linear change from minimum velocity (-500 m/s 12 weeks earlier), 4 days before the perihelion gives 86 kph (53 mph), three days gives just 64 kph (40 mph). But those are surely too big, since the rate of change of radial velocity would be slowest around perihelion and aphelion. I wouldn't expect the above-calculated rate of change until weeks out from perihelion. [[Special:Contributions/172.68.210.5|172.68.210.5]] 08:23, 6 December 2022 (UTC) |
:Using an ephemeris service, I get 27.6 m/s or 61.8 mph- a bit lower than Randall's record but still in the ballpark. The reason is probably because of the effect of the Moon's orbit on Earth. Of course it's not a huge effect, but when we're working in just a few miles per hour, it definitely has a monthly effect. | :Using an ephemeris service, I get 27.6 m/s or 61.8 mph- a bit lower than Randall's record but still in the ballpark. The reason is probably because of the effect of the Moon's orbit on Earth. Of course it's not a huge effect, but when we're working in just a few miles per hour, it definitely has a monthly effect. | ||
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Surely the really weird thing is an astronomer using non-SI units? [[Special:Contributions/172.70.86.12|172.70.86.12]] 09:40, 6 December 2022 (UTC) | Surely the really weird thing is an astronomer using non-SI units? [[Special:Contributions/172.70.86.12|172.70.86.12]] 09:40, 6 December 2022 (UTC) |