[AZ-Observing] Lunar graze in Gilbert Thursday evening
- From: gene lucas <geneluca@xxxxxxxxxxxxx>
- To: AZ-Observing <az-observing@xxxxxxxxxxxxx>, EVAC ASTRO <evac@xxxxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 08 Apr 2008 14:22:14 -0700
There is a lunar grazing occultation of a 6th magnitude star predicted
on Thursday evening, April 11th visible in the Phoenix area (weather
permitting).
This is a northern limit graze, visible along and soiuth of a line
crossing the south side of Gilbert, AZ (for instance). The limit line
passes from NW to SE roughly paralleling the railroad tracks in the east
part of the valley (and of course, extending across the state and the
western U.S.). Observers along or slightly south of, within about 1-2
miles of the limit line may see the star wink in and out behind the
mountains on the north limb (end) of the Moon, beginning at about 04:25
UT (21:25 local time MST).
Observers north of the line will see the Moon pass by the star without
an occultation, and observers farther south of the limit line will see a
total occultation.
The path of visiblity for the graze zone is only about 1-2 miles deep,
and depends strongly upon the observer's exact position. For instance,
the predicted limit passes across Gerry Rattley's house several blocks
west of Gilbert Rd., next to Elliott Rd., but will miss the GRCO dome
further east and north in Gilbert at the Riparian Water Park (near
Guadelupe and Greenfield Roads), passing several miles south.
More information is generally available on the IOTA web pages:
http://www.lunar-occultations.com/iota/iotandx.htm
Observers subscribing to IOTA services can receive annual prediction
packages (lunar and asteroidal occultations) for their individual location.
Gene Lucas
(17250)
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