Quote:
Originally Posted by Dennis
Hi Rolf
Thank you! I think that there are 3 main components of the apparent movement of Nereid in this 140 minute sequence;
Orbit of the Earth around the Sun (12 months)
Orbit of Nereid around Neptune (360 days)
Orbit of Neptune around the Sun (164 years)
I think that the distance travelled by the Earth along its orbit in the 140 minutes is by far the most predominant as Neptune moves quite slowly, taking almost 164 years to complete an orbit, compared to 12 months for our home planet.
See this post where Rob_K (msg#7) did a quick calculation on a previous post showing a Pluto animation.
Cheers
Dennis |
That's amazing. I hadn't throught of the parallax effect but yes it must be the biggest contributor. Thanks for the info!