Pitney Bowes MapXtreme User Manual
Page 583
Appendix H: Elements of a Coordinate System
Custom Datums
MapXtreme v7.1
590
Developer Guide
10
Bessel 1841
6377397.155
299.1528128
35
Bessel 1841 (modified for NGO 1948)
6377492.0176
299.15281
14
Bessel 1841 (modified for Schwarzeck)
6377483.865
299.1528128
36
Clarke 1858
6378293.639
294.26068
7
Clarke 1866
6378206.4
294.9786982
8
Clarke 1866 (modified for Michigan)
6378450.047484481
294.9786982
6
Clarke 1880
6378249.145
293.465
15
Clarke 1880 (modified for Arc 1950)
6378249.145326
293.4663076
30
Clarke 1880 (modified for IGN)
6378249.2
293.4660213
37
Clarke 1880 (modified for Jamaica)
6378249.136
293.46631
16
Clarke 1880 (modified for Merchich)
6378249.2
293.46598
38
Clarke 1880 (modified for Palestine)
6378300.79
293.46623
39
Everest (Brunei and East Malaysia (Sabah
and Sarawak))
6377298.556
300.8017
11
Everest (India 1830)
6377276.345
300.8017
40
Everest (India 1956)
6377301.243
300.80174
50
Everest (Pakistan)
6377309.613
300.8017
17
Everest (W. Malaysia and Singapore 1948) 6377304.063
300.8017
48
Everest (West Malaysia 1969)
6377295.664
300.8017
18
Fischer 1960
6378166.0
298.3
19
Fischer 1960 (modified for South Asia)
6378155.0
298.3
20
Fischer 1968
6378150.0
298.3
21
GRS 67
6378160.0
298.247167427
0
GRS 80
6378137.0
298.257222101
5
Hayford
6378388.0
297.0
22
Helmert 1906
6378200.0
298.3
Number
Ellipsoid
a
1/f