Vesta Lighting Conditions

Thomas pole
(uncertainty circle radius = 0 degrees)

(uncertainty circle radius = 3 degrees)

Date Subsolar
Latitude
1 JUL 201014.0
1 AUG 201010.1
1 SEP 20106.0
1 OCT 20101.8
1 NOV 2010-2.7
1 DEC 2010-7.0
1 JAN 2011-11.4
1 FEB 2011-15.5
1 MAR 2011-18.8
1 APR 2011-21.9
1 MAY 2011-24.3
1 JUN 2011-26.1
1 JUL 2011-27.0
1 AUG 2011-27.1
1 SEP 2011-26.5
1 OCT 2011-25.2
1 NOV 2011-23.4
1 DEC 2011-21.1
1 JAN 2012-18.4
1 FEB 2012-15.4
1 MAR 2012-12.4
1 APR 2012-9.1
1 MAY 2012-5.8
1 JUN 2012-2.4
1 JUL 20120.8
1 AUG 20124.1

Vesta Insolation at Local Noon

Subsolar
Latitude
X-axis runs 360 to 0 longitude (L to R), Y-axis runs -90 to 90 (B to T).
Max Intensity Fraction is the ratio of insolation to that when the sun is directly overhead.
NOTE: Serious shadowing begins when the Solar Elevation is greater than the mean local slope of the surface. What are the mean local slope values for various planetary surfaces?
+09
Contour
Value
Max Intensity
Fraction
Solar
Elevation
2551.0090
2400.9470
2000.7852
1600.6339
1200.4728
800.3118
400.169
+00
-09
-18
-27

Subsolar
Latitude
Area in Shadow at Noon
(N pole accidentally excluded)

Note: southern area in constant shadow illuminated after 1/2 rotation.

+27
+24
+21
+18
+15
+12
+09
+06
+03
+00
-03
-06
-09
-12
-15
-18
-21
-24
-27

Vesta Latitudinal Profiles at different Longitudes

360
355
350
345
340
335
330
325
320
315
310
305
300
295
290
285
280
270
265
260
255
250
245
240
235
230
225
220
215
210
205
200
195
190
185
180
175
170
165
160
155
150
145
140
135
130
125
120
115
110
105
100
095
090
085
080
075
070
065
060
055
050
045
040
035
030
025
020
015
010
005
000