Timeline for Does General Relativity predict Mercury's orbital precession without other planets?
Current License: CC BY-SA 4.0
12 events
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| Sep 19 at 13:00 | history | edited | controlgroup | CC BY-SA 4.0 |
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| Sep 19 at 12:58 | comment | added | controlgroup | Yes, I’ll do that momentarily. | |
| Sep 19 at 12:58 | comment | added | rob♦ | Oh, I see that you might have been trying to say that there isn't a need for a relativistic correction from the other planets. In that case, I suggest you rephrase. | |
| Sep 19 at 12:56 | comment | added | controlgroup | I didn’t write what I meant: I was referring to particularly relativistic precession because of the other planet’s gravity wells (I misread the question it seems). | |
| Sep 19 at 12:53 | comment | added | rob♦ | The admitted guess that other planets contribute neglibly to the precession, so that the precession is mostly from relativity, is just plain wrong. | |
| Sep 19 at 12:52 | comment | added | Stallmp | Right, and I assume the precession predicted by NG is purely due to other planets? So this is actually the dominant effect here still. | |
| Sep 19 at 12:51 | comment | added | PM 2Ring | @Stallmp The term "anomalous precession" was coined before GR, to describe the small difference between Mercury's observed precession & the precession predicted by Newtonian gravity. | |
| Sep 19 at 12:46 | comment | added | controlgroup | Of course this is implementation-dependent but when I set up a solar system model and have to track positions, I either drop the precession entirely or I account for $n$-body and also GR. Might as well match reality if you’re trying to at all, I suppose. | |
| Sep 19 at 12:44 | comment | added | PM 2Ring | @Stallmp The full precession of Mercury is much larger than the "anomalous" precession due to GR. For details, see the 1st Astronomy.SE link I posted above. | |
| Sep 19 at 12:44 | comment | added | controlgroup | FD precession is a result of GR; perturbations from other planets is still considered in NG, but I’ve never found it to be useful compared to the result from the geodetic effect. | |
| Sep 19 at 12:42 | comment | added | Stallmp | Thanks a lot for your answer! I thought that Newtonian gravity gave quite a significant non-zero result for the precession (of course still smaller than the one using GR) which was attributed to other planets? Or is that in NG purely due to frame-dragging precession as you mentioned? | |
| Sep 19 at 12:38 | history | answered | controlgroup | CC BY-SA 4.0 |