All times UT unless otherwise noted
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All times UT unless otherwise noted |
Graze of SAO75982 2023 Jan 30 ; Nominal site altitude 0mhttp://www.poyntsource.com/New/Google/SAO75982_2023_Jan_30.htm
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Graze of SAO119171 2023 Feb 9 ; Nominal site altitude 0mhttp://www.poyntsource.com/New/Google/SAO119171_2023_Feb__9.htm
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>>Graze of Mars 2023 Jan 31 ; Nominal site altitude 0m<<GoogleMap http://www.poyntsource.com/New/Google/Mars_2023_Jan_31.htm |
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The partial occultation zone is 21 km or 13 miles wide; observation near
the inner (southern) edge of the zone will prolong the partial
occultation. But irradiation will make the bright part of the Moon
appear larger, generally by about 2”, which translates into a shift of 4
miles north on the ground, for the effective zone where the partial
occultation might really be observed. In addition, the graze occurs in a
low area of the Moon, about 1 km below the mean surface, so overall, the
effective zone for the event will be 3 km north of the zone without any
corrections, which is shown by the green lines. The dark gray lines on
the Google map can be moved by specifying values in the boxes above the
map.
If you specify values of -3 and -24 in those boxes and apply them, those
lines should show the effective zone of visibility of the partial
occultation.
I also attach a map showing the current NWS cloud cover forecast – it
shows that the best area is central California and southern Nevada, with
partly cloudy conditions over n. New Mex. and the Texas panhandle;
mostly cloudy in other areas. |
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Profile for Fresno, CA
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Profile for Maxwell, NM
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Profile for East Coast of the US
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This site was last updated 01/28/23
© Copyright, Derek C Breit. All rights reserved.
