SP-474 Voyager 1 and 2 Atlas of Six Saturnian Satellites

 

PART 2

[21] Enceladus

 

Diameter

502 km (312) miles)

Density

1.1

Albedo

1.0

Distance from Saturn

240 192 km (149 250 miles)

Orbital period

33 hr, 21 min, 22 sec

Voyager 1 closest approach

202 040 km (125 542 miles)

Voyager 1 pictures used in mapping

0

Voyager 2 closest approach

87 140 km (54 146 miles)

Voyager 2 pictures used in mapping

19

 Only slightly larger than Mimas, Enceladus is about one-tenth as massive as the next larger pair of satellites, Tethys and Dione. Enceladus appears to be much smoother than the other satellites of Saturn and may be source of Ring E material. Although the north polar region is heavily cratered, Voyager 2 pictures of northern intermediate and equatorial latitudes display sinuous striations reminiscent of patterns on Jupiter's moo Ganymede. On Ganymede, these structures have been interpreted as being the result of the shifting of floating slabs of ice.

 

[22] Figure 2-1. Maps of Enceladus on conformal projections (map I-1485). Resolution of Voyager pictures of Enceladus in terms of aerial coverage.

Figure 2-1. Maps of Enceladus on conformal projections (map I-1485). Resolution of Voyager pictures of Enceladus in terms of aerial coverage.

[23] Figure 2-2. Index of Voyager 1 and 2 pictures used to compile the maps of Enceladus. Picture numbers indicate the subspacecraft point at the time the pictures were taken. Contour lines indicate the approximate resolution of available images in kilometers per picture element. (See also fig 2-1.)

Figure 2-2. Index of Voyager 1 and 2 pictures used to compile the maps of Enceladus. Picture numbers indicate the subspacecraft point at the time the pictures were taken. Contour lines indicate the approximate resolution of available images in kilometers per picture element (See also fig. 2-1).

[24] Figure 2-3. Maps of Enceladus on conformal projections (map I-1485).

Figure 2-3. Maps of Enceladus on conformal projections (map I-1485).

Figure 2-3. Maps of Enceladus on conformal projections (map I-1485).-continued

[25] Figure 2-4. Maps of the anti-Saturn-facing hemisphere of Enceladus on a Lambert azimuthal equal-area projection. Nomenclature is not shown, to avoid obscuring detail. (a) Scale 1:3 285 000 (1mm2= 10.79 km2; 1 in2 =~2688 mi2). (b) Scale 1:10 000 000 (1 mm2 = 100 km2; 1 in2 = ~25 000mi2).

Figure 2-4. Maps of the anti-Saturn-facing hemisphere of Enceladus on a Lambert azimuthal equal-area projection.

[26] Figure 2-5. Maps of the Saturn-facing hemisphere of Enceladus on a Lambert azimuthal equal-area projection. Nomenclature is not shown, to avoid obscuring detail. (a) Scale 1:3 285 000 (1mm2= 10.79 km2; 1 in2 =~2688 mi2). (b) Scale 1:10 000 000 (1 mm2 = 100 km2; 1 in2 = ~25 000mi2).

Figure 2-5. Maps of the Saturn-facing hemisphere of Enceladus on a Lambert azimuthal equal-area projection.

[27] Figure 2-6. Picno 0993S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

0993S2-001

FDS

43992.10

Range, km

441 895

Subspacecraft latitude/longitude, degrees

32/163

Subsolar latitude/longitude, degrees

8/201

Resolution, km/pixel

4

Filter size, pixels

41 x 41

Filter size, km

167

Scale

1:5 000 000

 

Figure 2-6. Picno 0993S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[28] Figure 2-7. Picno 1055S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1055S2-001

FDS

43993.12

Range, km

397 738

Subspacecraft latitude/longitude, degrees

35/175

Subsolar latitude/longitude, degrees

8/210

Resolution, km/pixel

3

Filter size, pixels

41 x 41

Filter size, km

167

Scale

1:5 000 000

Figure 2-7. Picno 1055S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[29] Figure 2-8. Picno 1059S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1059S2-001

FDS

43993.16

Range, km

395 076

Subspacecraft latitude/longitude, degrees

35/176

Subsolar latitude/longitude, degrees

8/210

Resolution, km/pixel

3

Filter size, pixels

37 x 37

Filter size, km

135

Scale

1:5 000 000

Figure 2-8. Picno 1059S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[30] Figure 2-9. Picno 1063S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1063S2-001

FDS

43993.20

Range, km

392 437

Subspacecraft latitude/longitude, degrees

35/177

Subsolar latitude/longitude, degrees

8/211

Resolution, km/pixel

3

Filter size, pixels

25 x 25

Filter size, km

90

Scale

1:5 000 000

Figure 2-9. Picno 1063S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[31] Figure 2-10. Picno 1225S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1225S2-001

FDS

43996.02

Range, km

304 160

Subspacecraft latitude/longitude, degrees

41/212

Subsolar latitude/longitude, degrees

8/234

Resolution, km/pixel

3

Filter size, pixels

69 x 69

Filter size, km

194

Scale

1:5 000 000

Figure 2-10. Picno 1225S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[32] Figure 2-11. Picno 1308S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1308S2-001

FDS

43997.25

Range, km

271 124

Subspacecraft latitude/longitude, degrees

43/232

Subsolar latitude/longitude, degrees

8/247

Resolution, km/pixel

2

Filter size, pixels

51 x 51

Filter size, km

128

Scale

1:5 000 000

Figure 2-11. Picno 1308S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[33] Figure 2-12. Picno 1312S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1312S2-001

FDS

43997.29

Range, km

269 684

Subspacecraft latitude/longitude, degrees

43/233

Subsolar latitude/longitude, degrees

8/247

Resolution, km/pixel

2

Filter size, pixels

25 x 25

Filter size, km

62

Scale

1:5 000 000

Figure 2-12. Picno 1312S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[34] Figure 2-13. Picno 1316S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1316S2-001

FDS

43997.33

Range, km

268 258

Subspacecraft latitude/longitude, degrees

43/234

Subsolar latitude/longitude, degrees

8/248

Resolution, km/pixel

2

Filter size, pixels

41 x 41

Filter size, km

102

Scale

1:5 000 000

Figure 2-13. Picno 1316S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[35] Figure 2-14. Picno 1403S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1403S2-001

FDS

43999.00

Range, km

239 199

Subspacecraft latitude/longitude, degrees

44/255

Subsolar latitude/longitude, degrees

8/260

Resolution, km/pixel

2

Filter size, pixels

61 x 61

Filter size, km

135

Scale

1:5 000 000

Figure 2-14. Picno 1403S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[36] Figure 2-15. Picno 1505S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1505S2-001

FDS

44000.42

Range, km

206 000

Subspacecraft latitude/longitude, degrees

44/278

Subsolar latitude/longitude, degrees

8/275

Resolution, km/pixel

2

Filter size, pixels

65 x 65

Filter size, km

124

Scale

1:5 000 000

Figure 2-15. Picno 1505S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[37] Figure 2-16. Picno 1507S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1507S2-001

FDS

44000.44

Range, km

205 316

Subspacecraft latitude/longitude, degrees

44/279

Subsolar latitude/longitude, degrees

8/276

Resolution, km/pixel

2

Filter size, pixels

57 x 57

Filter size, km

108

Scale

1:5 000 000

Figure 2-16. Picno 1507S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[38] Figure 2-17. Picno 1509S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1509S2-001

FDS

44000.46

Range, km

204 630

Subspacecraft latitude/longitude, degrees

44/279

Subsolar latitude/longitude, degrees

8/276

Resolution, km/pixel

2

Filter size, pixels

57 x 57

Filter size, km

108

Scale

1:5 000 000

Figure 2-17. Picno 1509S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[39] Figure 2-18. Picno 1511S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1511S2-001

FDS

44000.48

Range, km

203 940

Subspacecraft latitude/longitude, degrees

44/280

Subsolar latitude/longitude, degrees

8/276

Resolution, km/pixel

2

Filter size, pixels

59 x 59

Filter size, km

111

Scale

1:5 000 000

Figure 2-18. Picno 1511S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[40] Figure 2-19. Picno 1715S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1715S2-001

FDS

44004.12

Range, km

118 931

Subspacecraft latitude/longitude, degrees

39/333

Subsolar latitude/longitude, degrees

8/306

Resolution, km/pixel

1

Filter size, pixels

89 x 89

Filter size, km

98

Scale

1:5 000 000

Figure 2-19. Picno 1715S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[41] Figure 2-20. Picno 1723S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1723S2-001

FDS

44004.20

Range, km

115 338

Subspacecraft latitude/longitude, degrees

39/336

Subsolar latitude/longitude, degrees

8/307

Resolution, km/pixel

1

Filter size, pixels

83 x 83

Filter size, km

88

Scale

1:5 000 000

Figure 2-20. Picno 1723S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[42] Figure 2-21. Picno 1727S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1727S2-001

FDS

44004.24

Range, km

113 571

Subspacecraft latitude/longitude, degrees

38/338

Subsolar latitude/longitude, degrees

8/308

Resolution, km/pixel

1

Filter size, pixels

95 x 95

Filter size, km

100

Scale

1:5 000 000

Figure 2-21. Picno 1727S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[43] Figure 2-22. Picno 1731S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1731S2-001

FDS

44004.28

Range, km

111 827

Subspacecraft latitude/longitude, degrees

38/340

Subsolar latitude/longitude, degrees

8/308

Resolution, km/pixel

1

Filter size, pixels

95 x 95

Filter size, km

98

Scale

1:5 000 000

Figure 2-22. Picno 1731S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[44] Figure 2-23. Picno 1735S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1735S2-001

FDS

44004.32

Range, km

110 109

Subspacecraft latitude/longitude, degrees

37/341

Subsolar latitude/longitude, degrees

8/309

Resolution, km/pixel

1

Filter size, pixels

95 x 95

Filter size, km

97

Scale

1:5 000 000

Figure 2-23. Picno 1735S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

[45] Figure 2-24. Picno 1739S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

Picno

1739S2-001

FDS

44004.36

Range, km

108 421

Subspacecraft latitude/longitude, degrees

37/343

Subsolar latitude/longitude, degrees

8/309

Resolution, km/pixel

1

Filter size, pixels

69 x 69

Filter size, km

69

Scale

1:5 000 000

Figure 2-24. Picno 1739S2-001. (a) Unfiltered image. (b) High-pass filtered image. (c) Perspective grid.

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