OK, I'm a bit behind in my APOD viewing.
My understanding is:
The Earth orbiting about 93 million miles from the Sun.
The Moon orbiting about ¼ million miles from earth.
Stereo B, also in Solar orbit, trailing the Earth by about a million miles.
Basically, an equilateral triangle, with Earth/Sol forming one long side, Earth/Stereo B forming the base, and Stereo B/Sol the other long side.
I can't imagine any scenario in which a circle with a radius of ¼" scribed about one end of the 1" base of a 93" tall equilateral triangle can come anywhere near, let alone "transit" the opposite side.
What am I missing in how the moon came to be between Stereo B and the Sun?
Cheers,
CW
17:08:47 PDT
Monday, 03-12-2007
Lunar Transit From Stereo - ap070303.html (APOD 3 Mar 2007)
Should have done more investigation.
Per:
http://stereo-ssc.nascom.nasa.gov/where/
with the date 25-02-07 and time 13:50
the result is a plot of the moon in line between Stereo B and the Sun.
The relevant item being, while Stereo B was about 1 million miles _from_ the Earth, it was only "trailing" the Earth by about 230,500 miles.
Still, barely crossing the line of sight. They should have hung around for a shot of it coming back across, as well ...
Cheers,
CW
17:45:56 PDT
Monday, 03-12-2007
Per:
http://stereo-ssc.nascom.nasa.gov/where/
with the date 25-02-07 and time 13:50
the result is a plot of the moon in line between Stereo B and the Sun.
The relevant item being, while Stereo B was about 1 million miles _from_ the Earth, it was only "trailing" the Earth by about 230,500 miles.
Still, barely crossing the line of sight. They should have hung around for a shot of it coming back across, as well ...
Cheers,
CW
17:45:56 PDT
Monday, 03-12-2007