March 4th Mag 6.8 Double Star Graze thru the Cassini Region of the South Lunar Pole*

Sun Valley Mall

Contra Costa Blvd @ Willow Pass Rd

Pleasant Hill, CA

Meeting place / Derek’s Location Map is >> HERE

Scroll down for graze maps

 

Derek will have Public Viewing of Saturn from 7 to 9 pm…

Please Stop by and take a look thru the 12” LX200

*This is 6:30pm on Friday March 3rd local time.

 

Profile in Miles

 

Profile in Kilometers

 

Redline is 14m grazeline – Green and blue lines are 0.2miles apart..

 

Wide Map – Blue and Green Lines are 0.2 miles apart – Black lines are 0.6 km apart – Red Line is Grazeline = 0 km = 0 miles

 

Walt’s Map Or Center Section

Line legend is the same as above. Black lines 2.4, 1.8, 1.2,and 0.6 km North of the Southern Limit

 

North Section

Black lines are 3.6, 3.0, 2.4 and 1.8 km North of the Southern Limit

 

South Section

Black Lines are 1.8, 1.2, and 0.6 km North of the Red grazeline of 0.0 km / miles

 

 

Grazing Occultation of     348 cA2      Magnitude   6.8

Date   2006 March  4    (Saturday)     Nominal site altitude  14m

 

E. Longit.   Latitude     U.T.    Sun  Moon   TanZ   PA    WA      CA

   o  '  "    o  '  "   h  m  s   Alt Alt Az          o     o      o

-122  0  0   37 57 17   2 37 48    -8 47 253  0.95 154.0 171.81   5.16S

 

Path coordinates are referred to WGS84 (as used by GPS).

 

    348 is double :   7.0  9.0   0.000"    0.0

Graze Path of component #2  0.00km South, and 0.0 secs. later cf. primary.

 

    C A S S I N I   R E G I O N   G R A Z E

 

                Librations  Long +6.05   Lat -3.65

                            P +172.1     D -2.6

      Illumination of moon  22%+

        Elongation of Moon  56

    Vertical Profile Scale  1.89 km/arcsec at mean distance of moon

   Horizontal Scale Factor  1.56 deg/min

 

Limiting Magnitudes for various telescope apertures (in mm)

      CA\Tdia  50   100   150   200   250   300   350

     0.5      5.2   6.7   7.5   8.0   8.4   8.7   8.9

     2.5      5.2   6.7   7.5   8.0   8.4   8.7   8.9

     4.5      6.0   7.5   8.3   8.9   9.3   9.6   9.8

     6.5      6.0   7.5   8.4   8.9   9.3   9.6   9.9

     8.5      6.1   7.5   8.4   8.9   9.4   9.7   9.9

 

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Last updated: 2/15/06

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