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Questions tagged [precession]

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12
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3answers
102 views

Does the rotation of galaxies precess?

Does the axis of a galaxy as a whole "wobble" the same way that the Earth does? If so do we have any idea how much or how fast the Milky Way is doing so?
4
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1answer
59 views

Why does the precession of the earth affect other planets?

In the Wikipedia article on numerical integration of planetary motion it states: ...the flattening of the Earth causes precession, which causes the axial tilt to change, which affects the long-...
0
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1answer
50 views

Calculation of RA and DEC

I'm currently stuck on a problem. I have the RA and DEC for JD2000: RA = 17 57 48.49980 DEC = + 04 41 36.1114 I want to calculate the RA and DEC for 01.01.2017, how can I do it? The solution ...
2
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1answer
65 views

Axial wobble or binary star system

Is our solar system affected by a body unobserved as of yet that causes our solar system to curve through space in an orbit? Is this idea outlandish or us there any evidence to support it? Consider ...
0
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0answers
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Inconsistent Precession (Apsidal Rotation) Rate formulae for circular Clairaultian Orbits

TWO CLAIRAULTIAN GRAVITATIONAL FORMULAE Wells 2011/2016 refers to two well-known patterns of centripetal acceleration which (when applied in a Euclidean-Newtonian orbital system) produce "perihelion ...
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0answers
495 views

How to calculate duration of days at month in Tamil calendar?

Currently I am trying to create Tamil calendar program based on Python language since I could notice lot of differences(i.e. Number of days in month and days in year) between each Tamil calendar which ...
4
votes
1answer
82 views

Season cycle < Year?

Is it possible for a planet's axis to precess or wobble in such a way that its season cycle is of lesser duration than its year? The gyroscopic precession will thus give seasons to one or the other ...
3
votes
1answer
140 views

Relationship between precession and dating ancient alignments

Perusing the topics here. I am convinced that this is the right place to get some answers. Although it does appear that my question should be relegated to the "childrens table". I am curious to ...
3
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1answer
212 views

nodal precession: earth's orbit of sun

Does the Earth's orbit around the sun exhibit nodal precession, as does the moon's around the Earth? If it does, that must mean that the ecliptic is in a periodic wobble with respect to the celestial ...
0
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0answers
119 views

Is there evidence for precession of the seasons?

With the wobble model of precession of the zodiac, the equinoxes retrogress because the tilt is changing its orientation to the Sun as it wobbles about. This causes the equinoxes, as well as the ...
2
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0answers
84 views

Was the Crab Nebula to the southeast of Zeta Tauri 1,000 years ago?

I've been reading about SN 1054 and how most professional investigators believe that it is the Crab Nebula today. But the wiki article has this to say: The location of the guest star as "to the ...