Hi Ed,
I was doing some analysis of your transit
photo. In the screen capture below, the blue arrow is my predicted
transit path. The green arrow basically moves west- at a right
angle to the moon- from your observation site, to a point
on my predicted transit path (37.7067 N, 121.4597 W).
Below is my "graphic guess" at actual track of the
ISS across the moon:
Below, I used Rob Matson's SkyMap 6.6, along with
my original TLE...
1 25544U 98067A 03311.56905964 .00014961
00000-0 18257-3 0 9012
2 25544 51.6313 17.3303 0006419 113.5906 246.5926 15.63752493
3410
to generate its prediction of the track,
based upon your observation site (37.7018
N, 121.4473 W):
Next is SkyMap's prediction based upon the
point on my original transit track (37.7067
N, 121.4597 W). Since the observation point
has moved west, the track of the ISS will move
east:
Next, I made of composite of these 2 SkyMap predictions,
and your composite photograph:
Finally, here's a magnified composite:
It appears that, for the observation site, SkyMap's
prediction is slightly east of the actual transit track. If you'd been
at the point on the original transit path, marked by the green arrow, and
represented by the left (east) most SkyMap track, then it appears to me that
you would have observed a near dead-center transit ... !