HDPWS

Astronomical Objects Ephemerides - Planets and Moons - Saturn Moons - Enceladus

ResourceID
spase://CNES/NumericalData/CDPP-AMDA/Ephemerides/enceladus-orb-all

Description
Enceladus is one of the major inner satellites of Saturn along with Dione, Tethys, and Mimas. It orbits at 238,000 km from Saturn's center and 180,000 km from its cloud tops, between the orbits of Mimas and Tethys. It orbits Saturn every 32.9 hours, fast enough for its motion to be observed over a single night of observation. Enceladus is currently in a 2:1 mean-motion orbital resonance with Dione, completing two orbits around Saturn for every one orbit completed by Dione. This resonance maintains Enceladus's orbital eccentricity (0.0047), which is known as a forced eccentricity. This non-zero eccentricity results in tidal deformation of Enceladus. The dissipated heat resulting from this deformation is the main heating source for Enceladus's geologic activity. Enceladus orbits within the densest part of Saturn's E ring, the outermost of its major rings, and is the main source of the ring's material composition. Like most of Saturn's larger satellites, Enceladus rotates synchronously with its orbital period, keeping one face pointed toward Saturn. Unlike Earth's Moon, Enceladus does not appear to librate more than 1.5° about its spin axis. However, analysis of the shape of Enceladus suggests that at some point it was in a 1:4 forced secondary spin–orbit libration. This libration could have provided Enceladus with an additional heat source.

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NumericalData

ResourceID
spase://CNES/NumericalData/CDPP-AMDA/Ephemerides/enceladus-orb-all
ResourceHeader
ResourceName
Astronomical Objects Ephemerides - Planets and Moons - Saturn Moons - Enceladus
ReleaseDate
2023-03-08 16:39:47Z
Description
Enceladus is one of the major inner satellites of Saturn along with Dione, Tethys, and Mimas. It orbits at 238,000 km from Saturn's center and 180,000 km from its cloud tops, between the orbits of Mimas and Tethys. It orbits Saturn every 32.9 hours, fast enough for its motion to be observed over a single night of observation. Enceladus is currently in a 2:1 mean-motion orbital resonance with Dione, completing two orbits around Saturn for every one orbit completed by Dione. This resonance maintains Enceladus's orbital eccentricity (0.0047), which is known as a forced eccentricity. This non-zero eccentricity results in tidal deformation of Enceladus. The dissipated heat resulting from this deformation is the main heating source for Enceladus's geologic activity. Enceladus orbits within the densest part of Saturn's E ring, the outermost of its major rings, and is the main source of the ring's material composition. Like most of Saturn's larger satellites, Enceladus rotates synchronously with its orbital period, keeping one face pointed toward Saturn. Unlike Earth's Moon, Enceladus does not appear to librate more than 1.5° about its spin axis. However, analysis of the shape of Enceladus suggests that at some point it was in a 1:4 forced secondary spin–orbit libration. This libration could have provided Enceladus with an additional heat source.
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://CNES/Person/CDPP-AMDA/NAIF
Association
AssociationID
AssociationType
PartOf
Note
Saturn Moons
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA HAPI Server
URL
Style
HAPI
ProductKey
enceladus-orb-all
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA Web application
URL
Description
Access to Data via CDPP/AMDA Web application.
Format
CSV
Format
VOTable
Format
CDF
Format
PNG
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.
ProviderName
SPICE
InstrumentIDs
MeasurementType
Ephemeris
TemporalDescription
TimeSpan
StartDate
1970-01-01 00:00:00Z
StopDate
2035-01-19 23:19:31Z
Cadence
PT20M
ObservedRegion
Saturn
ObservedRegion
Saturn.Enceladus
Parameter #1
Name
distance enceladus-saturn
ParameterKey
enc_sat_r
Units
Rs
RenderingHints
DisplayType
TimeSeries
Support
SupportQuantity
Positional
Parameter #2
Name
xyz_ksm
ParameterKey
enc_sat_ksm
Units
Rs
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
KSM
RenderingHints
DisplayType
TimeSeries
Structure
Size
3
Element
Name
x
Index
1
ParameterKey
enc_sat_ksm(0)
Element
Name
y
Index
2
ParameterKey
enc_sat_ksm(1)
Element
Name
z
Index
3
ParameterKey
enc_sat_ksm(2)
Support
SupportQuantity
Positional
Parameter #3
Name
xyz_kso
ParameterKey
enc_sat_kso
Units
Rs
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
KSO
RenderingHints
DisplayType
TimeSeries
Structure
Size
3
Element
Name
x
Index
1
ParameterKey
enc_sat_kso(0)
Element
Name
y
Index
2
ParameterKey
enc_sat_kso(1)
Element
Name
z
Index
3
ParameterKey
enc_sat_kso(2)
Support
SupportQuantity
Positional
Parameter #4
Name
xyz_IAU_saturn
ParameterKey
enc_sat_xyz
Units
Rs
RenderingHints
DisplayType
TimeSeries
Structure
Size
3
Element
Name
x
Index
1
ParameterKey
enc_sat_xyz(0)
Element
Name
y
Index
2
ParameterKey
enc_sat_xyz(1)
Element
Name
z
Index
3
ParameterKey
enc_sat_xyz(2)
Support
SupportQuantity
Positional
Parameter #5
Name
latitude IAU_saturn
ParameterKey
enc_sat_lat
Units
deg
Support
SupportQuantity
Positional
Parameter #6
Name
longitude IAU_saturn
ParameterKey
enc_sat_lon
Units
deg
Support
SupportQuantity
Positional