Topocentric vs geocentric.

Best &c,
Steve

On the batphone, so apologies for brevity, typos & inappropriate autocorrect.

On 11 Nov 2016 5:41 pm, "s.kranz1@... [guide-user]" <guide-user@yahoogroups.com> wrote:

 

So how accurate is Guide regarding data on the Moon such as distance?

With the upcoming Full Moon and all the publicity of the Supermoon, I was checking out some lunar data on Guide.

According to most of the sites and stories I've read, the closest distance to the Moon is supposed to be at 11:23 UT on Nov 14 with a distance of 356,509 km.

BUT at that time, Guide shows the Moon being at 354,837 km away.

According to Guide, the closest point will be at 05:53:30 UT on the 14th with a distance of 350,854 km.

Now, I am in no way a fanatic about this whole supermoon business, but if it gets people out looking up, then I'm all for it.

But the differences between Guide and the reported time and distance has me worried.

Thoughts?

-Scott Kranz