|
gptkbp:instanceOf
|
gptkb:satellite
|
|
gptkbp:abbreviation
|
gptkb:MErcury_Surface,_Space_ENvironment,_GEochemistry,_and_Ranging
|
|
gptkbp:cost
|
$446 million (excluding launch vehicle)
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gptkbp:discoveredBy
|
evidence of water ice at Mercury's poles
volatile elements on Mercury's surface
hollows on Mercury's surface
detailed global map of Mercury
magnetic field offset from planet's center
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gptkbp:duration
|
7 years, 9 months, 12 days (at Mercury)
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gptkbp:endDate
|
2015-04-30
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gptkbp:enteredMercuryOrbit
|
2011-03-18
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|
gptkbp:firstMercuryOrbiter
|
true
|
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gptkbp:flyby
|
gptkb:Mercury_(3)
gptkb:Venus_(2)
Earth (1)
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|
https://www.w3.org/2000/01/rdf-schema#label
|
MESSENGER spacecraft
|
|
gptkbp:instrument
|
gptkb:Energetic_Particle_and_Plasma_Spectrometer_(EPPS)
gptkb:Gamma-Ray_and_Neutron_Spectrometer_(GRNS)
gptkb:Mercury_Atmospheric_and_Surface_Composition_Spectrometer_(MASCS)
gptkb:Mercury_Dual_Imaging_System_(MDIS)
gptkb:Mercury_Laser_Altimeter_(MLA)
gptkb:Radio_Science_(RS)
gptkb:X-Ray_Spectrometer_(XRS)
gptkb:Magnetometer_(MAG)
|
|
gptkbp:launchDate
|
2004-08-03
|
|
gptkbp:launchSite
|
gptkb:Cape_Canaveral_SLC-17B
|
|
gptkbp:launchVehicle
|
gptkb:Delta_II_7925H
|
|
gptkbp:manufacturer
|
gptkb:Johns_Hopkins_University_Applied_Physics_Laboratory
|
|
gptkbp:mass
|
1,107.9 kg (launch)
487.8 kg
|
|
gptkbp:missionEndReason
|
crashed into Mercury
|
|
gptkbp:missionType
|
orbiter
|
|
gptkbp:objective
|
study Mercury's chemical composition
study Mercury's core
study Mercury's exosphere
study Mercury's geology
study Mercury's magnetic field
|
|
gptkbp:operator
|
gptkb:NASA
|
|
gptkbp:powers
|
640 watts
|
|
gptkbp:status
|
mission complete
|
|
gptkbp:target
|
gptkb:Mercury
|
|
gptkbp:website
|
https://messenger.jhuapl.edu/
|
|
gptkbp:bfsParent
|
gptkb:Delta_rocket_family
|
|
gptkbp:bfsLayer
|
5
|