<p>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 sphere?</p>

CC BY-SA 3.0
2017-10-05T08:13:53.090Z
@Barrycarter, the first point of Aries is now in Pisces.
Dr Chuck
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2017-10-05T20:06:54.570Z
@barrycarter Hope you are feeling better now.
Dr Chuck
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2017-10-05T21:20:51.127Z
Using Wikipedia as a reference, nodal precession can be calculated based on an object's equatorial bulge and the variation of the Earth's orbital plane to the sun's equatorial plane (ecliptic).   https://en.wikipedia.org/wiki/Nodal_precession#Equation   I'd prefer not to try to do the math myself though.
userLTK
<orbit><precession>
nodal precession: earth's orbit of sun
charlie_sar
# nodal precession: earth's orbit of sun

(Asked by: username_0 on 2017-09-02)

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 sphere?

**Tags:** orbit, precession

> **Comments:**
> **username_1**: @Barrycarter, the first point of Aries is now in Pisces.  
> **username_1**: @barrycarter Hope you are feeling better now.  
> **username_2**: Using Wikipedia as a reference, nodal precession can be calculated based on an object's equatorial bulge and the variation of the Earth's orbital plane to the sun's equatorial plane (ecliptic).   https://en.wikipedia.org/wiki/Nodal_precession#Equation   I'd prefer not to try to do the math myself though.  

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## 0 answers

