3
votes
Problem with the Orbital Precession predicted by the Relativistic Acceleration equation used in the JPL D440-D441 Ephemerides - please advise
If you switch to polar coordinates and use the classical Newtonian gravitation of $GM/r^2$ (inwards) you get a centrifugal term of $v^2/r$ (outwards) Since these two terms must cancel out for a ...
- 457
2
votes
Orbital decay of the sun's orbit around Sgr A*: is it likely?
Pretty much none whatsoever. The radial migration of stars within the galaxy is a slow process and not completely understood. The radial positions of stars with respect to the centre of the galaxy can ...
- 129k
2
votes
Problem with the Orbital Precession predicted by the Relativistic Acceleration equation used in the JPL D440-D441 Ephemerides - please advise
It helps to be clear at the outset what the effect of different exotic accelerations terms is upon orbit rotation.
Assuming $m<<M$ and Newtonian Elliptical Orbits we have Specific Angular ...
- 1,418
2
votes
Problem with the Orbital Precession predicted by the Relativistic Acceleration equation used in the JPL D440-D441 Ephemerides - please advise
NOTE
There are some errors in this answer but I will leave it posted for now as it contains definitions and sources used in my other (shorter) answer.
In the question I overlooked the fact that
$\...
- 1,418
1
vote
Is there an optimum orbit for a Hipparcos/Gaia-like parallax observatory
It may be the Jupiter-Sun L2 point. There is not light from Sun. This provides a minimum low temperature. This is necessary for a minimum noise and for a greater sensitivity. There is acceptable ...
- 163
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