Planetary Map Index
Index of Maps of the Planets and Satellites
Original publication by J.L. Inge and R.M. Batson, 1992.
Scale Factors
Scale factors used to plot planetary map projections are shown in the following tables.
| Projection | Latitude | Scale Factor |
|---|---|---|
| Polar Stereographic | 90° | 1.6354 |
| All spherical planets | 56° | 1.7883 |
| Mars only | 90° | 1.8589 |
| 56° | 1.9922 | |
| Mercator | 56° | 1.7883 |
| All spherical planets | Equator | 1.0000 |
| Mars only | 60° | 1.9922 |
| Equator | 1.0000 |
| Body | 1:50M | 1:25M | 1:15M | 1:5M | 1:2M |
|---|---|---|---|---|---|
| Mercury | --- | --- | 1 | --- | --- |
| Venus | 1 | 3 | 8 | --- | --- |
| Moon | --- | --- | --- | 4 | --- |
| Mars | --- | 1 | 3 | --- | --- |
| Io | --- | 1 | 1 | --- | --- |
| Europa | --- | 1 | 1 | --- | --- |
| Ganymede | --- | 1 | 1 | --- | --- |
| Callisto | --- | 1 | 1 | --- | --- |
| Mimas | --- | --- | --- | --- | 1 |
| Enceladus | --- | --- | --- | --- | 1 |
| Tethys | --- | --- | --- | 1 | 1 |
| Dione | --- | --- | --- | 1 | 1 |
| Rhea | --- | --- | --- | 1 | 3 |
| Iapetus | --- | --- | --- | 1 | --- |
| Miranda | --- | --- | --- | --- | 1 |
| Ariel | --- | --- | --- | --- | 1 |
| Umbriel | --- | --- | --- | 1 | --- |
| Titania | --- | --- | --- | 1 | --- |
| Oberon | --- | --- | --- | 1 | --- |
| Triton | --- | 1 | 1 | --- | --- |
Table 3. Scale factors for Mars quadrangles.
Projection Latitude 1:5,000,000 1:2,000,000
-----------------------------------------------
Polar 90.00° 1.1067 0.98300
Stereographic 65.00° 1.1611 1.0313
Lambert 65.00° 1.1611 1.0313
Conformal 59.17° 1.1259 1.0000
Conic 35.83° 1.1259 1.0000
30.00° 1.1532 1.0243
Mercator 30.00° 1.1532 1.0243
27.476° 1.1256 1.0000
0.00° 1.0000 0.88819
Table 4. Scale factors for mapping Mercury and Ganymede.
Scale Factor Revised
Projection Latitude (Mercury Scale Factor 1:5M only)
--------------------------------------------------------
Polar 90.00° 1.0529 1.0000
Stereographic 67.50° 1.0946 N/A
65.19° N/A 1.0484
Lambert 67.50° 1.0946 N/A
Conformal 65.19° N/A 1.0484
Conic 62.00° N/A 1.0000
58.00° 1.0494 N/A
30.00° N/A 1.0000
28.00° 1.0494 N/A
22.50° 1.0824 N/A
21.34° N/A 1.0461
Mercator 22.50° 1.0824 N/A
21.34° N/A 1.0461
13.00° N/A 1.0000
0.00° 1.0000 0.9744
Table 5. Scale factors for mapping the Moon, Io, Europa, and Triton at 1:5,000,000.
Projection Latitude Scale factor
------------------------------------
Polar 90.00° 1.0000
Stereographic 45.00° 1.1716
Mercator 45.00° 1.1716
34.06° 1.0000
0.00° 0.82839
Table 6. Scale factors for lunar 1:1,000,000 quadrangles.
Projection Latitude Scale factor
-----------------------------------------
Polar Stereographic 90.00° 1.0000
80.00° 1.0076
Lambert 80.00° 1.0314
Conformal Conic 74.67° 1.0000
53.33° 1.0000
48.00° 1.0194
Lambert 48.00° 1.0239
Conformal Conic 42.67° 1.0000
21.33° 1.0000
16.00° 1.0211
Mercator 16.00° 1.0211
11.0124° 1.0000
0.00° 0.9816
Table 7. Scale factors for Venus 1:5,000,000 quadrangles
Projection Latitude Scale factor
------------------------------------------
Polar Stereographic 90.00° 1.0000
75.00° 1.01792
Lambert 75.00° 1.01792
Conformal Conic 73.00° 1.0000
34.00° 1.0000
25.00° 1.06115
Mercator 25.00° 1.06115
15.90° 1.0000
0.00° 0.961725
Table 8. Scale factors for the Mars Transverse Mercator (MTM) 1:500,000 series.
Projection Latitude Scale factor
--------------------------------------------
Polar Stereographic 90.00° 0.9993
87.50° 1.0000
82.50° 1.0038
Transverse Mercator 10.00° Longitude 0.9960
30.00° Longitude 0.9960
through 0.9960
350.00° Longitude 0.9960