dione-orb-all.xml
7.47 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
<?xml version="1.0" encoding="UTF-8"?>
<Spase xmlns="http://www.spase-group.org/data/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.spase-group.org/data/schema http://amda.irap.omp.eu/public/schemas/spase-2_3_1.xsd">
<Version>2.3.1</Version>
<NumericalData>
<ResourceID>spase://CNES/NumericalData/CDPP-AMDA/Ephemerides/dione-orb-all</ResourceID>
<ResourceHeader>
<ResourceName>Dione</ResourceName>
<ReleaseDate>2017-10-14T11:46:29Z</ReleaseDate>
<Description>Dione orbits Saturn with a semimajor axis about 2% less than that of the Moon. However, reflecting Saturn's greater mass (95 times that of Earth's), Dione's orbital period is one tenth that of the Moon. Dione is currently in a 1:2 mean-motion orbital resonance with moon Enceladus, completing one orbit of Saturn for every two orbits completed by Enceladus. This resonance maintains Enceladus's orbital eccentricity (0.0047), providing a source of heat for Enceladus's extensive geological activity, which shows up most dramatically in its cryovolcanic geyser-like jets. The resonance also maintains a smaller eccentricity in Dione's orbit (0.0022), tidally heating it as well.
Dione has two co-orbital, or trojan, moons, Helene and Polydeuces. They are located within Dione's Lagrangian points L4 and L5, 60 degrees ahead of and behind Dione respectively.</Description>
<Contact>
<PersonID>spase://CNES/Person/NAIF</PersonID>
<Role>PrincipalInvestigator</Role>
</Contact>
<Association>
<AssociationID>sat-moons-orb</AssociationID>
<AssociationType>PartOf</AssociationType>
<Note>Saturn Moons</Note>
</Association>
</ResourceHeader>
<AccessInformation>
<RepositoryID>spase://SMWG/Repository/CNES/CDPP-AMDA</RepositoryID>
<Availability>Online</Availability>
<AccessRights>Open</AccessRights>
<AccessURL>
<URL>http://amda.cdpp.eu</URL>
</AccessURL>
<Format>Text.ASCII</Format>
</AccessInformation>
<ProviderName>SPICE</ProviderName>
<InstrumentID>spase://CNES/Instrument/CDPP-AMDA/Ephemerides</InstrumentID>
<MeasurementType>Ephemeris</MeasurementType>
<TemporalDescription>
<TimeSpan>
<StartDate>1970-01-01T00:00:00Z</StartDate>
<StopDate>2022-12-23T23:19:59Z</StopDate>
</TimeSpan>
<Cadence>PT20M</Cadence>
</TemporalDescription>
<ObservedRegion>Saturn</ObservedRegion>
<ObservedRegion>Saturn.Dione</ObservedRegion>
<Parameter>
<Name>distance dione-saturn</Name>
<ParameterKey>dio_sat_r</ParameterKey>
<Ucd/>
<Units>Rs</Units>
<RenderingHints>
<DisplayType>TimeSeries</DisplayType>
</RenderingHints>
<Support>
<SupportQuantity>Positional</SupportQuantity>
</Support>
</Parameter>
<Parameter>
<Name>xyz_ksm</Name>
<ParameterKey>dio_sat_ksm</ParameterKey>
<Ucd/>
<Units>Rs</Units>
<CoordinateSystem>
<CoordinateRepresentation>Cartesian</CoordinateRepresentation>
<CoordinateSystemName>KSM</CoordinateSystemName>
</CoordinateSystem>
<RenderingHints>
<DisplayType>TimeSeries</DisplayType>
</RenderingHints>
<Structure>
<Size>3</Size>
<Element>
<Name>x</Name>
<Index>1</Index>
<ParameterKey>dio_sat_ksm(0)</ParameterKey>
</Element>
<Element>
<Name>y</Name>
<Index>2</Index>
<ParameterKey>dio_sat_ksm(1)</ParameterKey>
</Element>
<Element>
<Name>z</Name>
<Index>3</Index>
<ParameterKey>dio_sat_ksm(2)</ParameterKey>
</Element>
</Structure>
<Support>
<SupportQuantity>Positional</SupportQuantity>
</Support>
</Parameter>
<Parameter>
<Name>xyz_kso</Name>
<ParameterKey>dio_sat_kso</ParameterKey>
<Ucd/>
<Units>Rs</Units>
<CoordinateSystem>
<CoordinateRepresentation>Cartesian</CoordinateRepresentation>
<CoordinateSystemName>KSO</CoordinateSystemName>
</CoordinateSystem>
<RenderingHints>
<DisplayType>TimeSeries</DisplayType>
</RenderingHints>
<Structure>
<Size>3</Size>
<Element>
<Name>x</Name>
<Index>1</Index>
<ParameterKey>dio_sat_kso(0)</ParameterKey>
</Element>
<Element>
<Name>y</Name>
<Index>2</Index>
<ParameterKey>dio_sat_kso(1)</ParameterKey>
</Element>
<Element>
<Name>z</Name>
<Index>3</Index>
<ParameterKey>dio_sat_kso(2)</ParameterKey>
</Element>
</Structure>
<Support>
<SupportQuantity>Positional</SupportQuantity>
</Support>
</Parameter>
<Parameter>
<Name>xyz_IAU_saturn</Name>
<ParameterKey>dio_sat_xyz</ParameterKey>
<Ucd/>
<Units>Rs</Units>
<CoordinateSystem>
<CoordinateRepresentation>Cartesian</CoordinateRepresentation>
<CoordinateSystemName>IAU_Saturn</CoordinateSystemName>
</CoordinateSystem>
<RenderingHints>
<DisplayType>TimeSeries</DisplayType>
</RenderingHints>
<Structure>
<Size>3</Size>
<Element>
<Name>x</Name>
<Index>1</Index>
<ParameterKey>dio_sat_xyz(0)</ParameterKey>
</Element>
<Element>
<Name>y</Name>
<Index>2</Index>
<ParameterKey>dio_sat_xyz(1)</ParameterKey>
</Element>
<Element>
<Name>z</Name>
<Index>3</Index>
<ParameterKey>dio_sat_xyz(2)</ParameterKey>
</Element>
</Structure>
<Support>
<SupportQuantity>Positional</SupportQuantity>
</Support>
</Parameter>
<Parameter>
<Name>latitude IAU_saturn</Name>
<ParameterKey>dio_sat_lat</ParameterKey>
<Ucd/>
<Units>deg</Units>
<Support>
<SupportQuantity>Positional</SupportQuantity>
</Support>
</Parameter>
<Parameter>
<Name>longitude IAU_saturn</Name>
<ParameterKey>dio_sat_lon</ParameterKey>
<Ucd/>
<Units>deg</Units>
<Support>
<SupportQuantity>Positional</SupportQuantity>
</Support>
</Parameter>
</NumericalData>
</Spase>