urn:nasa:pds:izenberg_pdart14_meap:data_eetable:ele_evt_8hr_orbit_2014-2015 1.0 1.7.0.0 Product_Observational 2017-02-09 1.0 Izenberg PDART 2014 MEAP Energetic Electron Events Table. 8 hr orbit 2014-2015. 2014-01-01Z 2015-04-30Z Science Derived Data from the MESSENGER Neutron Spectrometer (NS) have been used to detect and characterize energetic electron (EE) events within Mercury's magnetosphere. MESSENGER Mission urn:nasa:pds:context:investigation:mission.messenger data_to_investigation MESSENGER NS MESSENGER Spacecraft urn:nasa:pds:context:instrument_host:spacecraft.mess is_instrument_host NS Instrument urn:nasa:pds:context:instrument:ns.mess is_instrument Mercury Planet urn:nasa:pds:context:target:planet.mercury collection_to_target 10.1126/science.1211141 Ho et al., 2011, MESSENGER observations of transient bursts of energetic electrons in Mercury's magnetosphere, Science, 333, 1865-8. ele_evt_8hr_orbit_2014-2015.tab 2017-02-09T12:44:00Z 7789416

0 354 7-Bit ASCII Text The first row of the table contains column headings.

Energetic Electron events, 8 hour orbit, 2014-2015 354 22003 Carriage-Return Line-Feed 22 0 354 Event Number 1 1 ASCII_Real 16 EE event number. The value is repeated for 'Event Length' rows in the file. Event Length 2 17 ASCII_Real 16 Number of 20-second accumulations. The value is repeated for 'Event Length' rows in the file. Day of Year 3 33 ASCII_Real 16 Day of year on which the 20-second accumulation occurs. Month 4 49 ASCII_Real 16 Month in which the 20-second accumulation occurs. Day 5 65 ASCII_Real 16 Day in the month in which the 20-second accumulation occurs. Year 6 81 ASCII_Real 16 Year in which the 20-second accumulation occurs. Hour 7 97 ASCII_Real 16 Hour within the day in which the 20-second accumulation occurs. Minute 8 113 ASCII_Real 16 Minute within the hour in which the 20-second accumulation occurs. Second 9 129 ASCII_Real 16 Second within the minute in which the 20-second accumulation occurs. MET 10 145 ASCII_Real 16 s Mission elapsed time, and is the mission tag time in seconds of the start of the associated accumulated period. Orbit Number 11 161 ASCII_Real 16 Unique identifier for a given orbit of MESSENGER around Mercury. Orbit number is defined as starting at apoherm and is calculated using the MET value and the appropriate SPICE kernels. Orbit numbering does not start until MESSENGER performs the Mercury orbit insertion. Until that time the value for orbit number is 0. Altitude 12 177 ASCII_Real 16 km Spacecraft altitude above the subsatellite point on the target in units of km. Latitude 13 193 ASCII_Real 16 deg Target-centric latitude of the spacecraft subsatellite point in degrees. Longitude 14 209 ASCII_Real 16 deg Target-centric longitude of the spacecraft subsatellite point in degrees. Local Time 15 225 ASCII_Real 16 hr Local time of the spacecraft subsatellite point in hours from 0 to 24. Beta Angle 16 241 ASCII_Real 16 deg Angle of the normal of the spacecraft orbital plane with respect to Mercury-to-Sun vector in degrees. Sun Distance 17 257 ASCII_Real 16 km Distance of the spacecraft to the Sun in units of km. Periapsis Latitude 18 273 ASCII_Real 16 deg Target-centric latitude of the spacecraft when it is at the periapsis (lowest) altitude for the given orbit number. Event Length Minute 19 289 ASCII_Real 16 min Length of the EE event in minutes. The value is repeated for 'Event Length' rows in the file. SN 20 305 ASCII_Real 16 none Event signal-to-noise, and is the measure of the size of the event within each 20-second accumulation. BP_TOT 21 321 ASCII_Real 16 Total counts within the Borated Plastic sensor, 64-channel, 20-s spectral accumulation. BP_LOW 22 337 ASCII_Real 16 Total counts within the lowest 12 channels of the Borated Plastic sensor, 64-channel, 20-s spectral accumulation.