urn:nasa:pds:vg2-crs-nep-urn-pdart2019:data-proton-flux:prot_d_400 0.1 1.23.0.0 Product_Observational 2025 This file contains Voyager 2 CRS LET D 3.7-4.3 MeV proton flux data from the Neptune encounter, covering 1989-08-24T22:03 to 1989-08-25T10:00. Note that these data have not completed PDS peer review and are not certified. Please exercise caution. Mark Looper 0000-0001-8223-1598 1 The Aerospace Corporation: El Segundo, California, US https://ror.org/01ar9e455 1 Nand Lal 2 Goddard Space Flight Center https://ror.org/0171mag52 1 Bryant Heikkila 3 Wyle Laboratories 1 Joseph N. Mafi 4 University of California, Los Angeles https://ror.org/046rm7j60 1 Steven P. Joy 0000-0003-1744-8541 5 University of California, Los Angeles https://ror.org/046rm7j60 1 2025-05-08 0.1 Pre-Peer Review Version. Note that these data have not completed PDS peer review and are not certified. Please exercise caution. 1989-08-24T22:03:12Z 1989-08-25T10:00:00Z Science Calibrated Magnetosphere Particles Ions Cosmic Ray Voyager Mission urn:nasa:pds:context:investigation:mission.voyager data_to_investigation Voyager 2 Host urn:nasa:pds:context:instrument_host:spacecraft.vg2 is_instrument_host Cosmic Ray Subsystem (CRS) Instrument urn:nasa:pds:context:instrument:vg2.crs is_instrument Solar Wind Plasma Stream urn:nasa:pds:context:target:plasma_stream.solar_wind data_to_target Neptune Planet urn:nasa:pds:context:target:planet.neptune data_to_target Neptune Encounter 3.7 4.3 Ions Flux Proton prot_d_400.csv 2025-04-22T17:11:19 21646 8c07ea6a1fa90792c42b4d71bb0c241d

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208 PDS DSV 1 120 Carriage-Return Line-Feed Comma 19 0 Vol 0 1 ASCII_Integer Index number of the first of two 96-second telemetry volumes in the data accumulation interval Vol 1 2 ASCII_Integer Index number of the second of two 96-second telemetry volumes in the data accumulation interval Time 3 ASCII_Date_Time_YMD Time at the midpoint of the 192-second accumulation interval in the format: yyyy-mm-ddThh:mm:ss. Time start 4 ASCII_Date_Time_YMD Beginning of the 192-second data accumulation interval Time stop 5 ASCII_Date_Time_YMD End of the 192-second data accumulation interval Hour 6 ASCII_Real Hour Midpoint of the 192-second data accumulation interval Hour start 7 ASCII_Real Hour Beginning of the 192-second data accumulation interval Hour stop 8 ASCII_Real Hour End of the 192-second data accumulation interval Counts 9 ASCII_Integer Number of protons counted by the LET telescope in this energy channel during the data accumulation interval One-count flux 10 ASCII_Real 1/(cm**2*sr*s*MeV) log10 of flux represented by one proton count during the data accumuation interval, accounting for geometry factor, accumulation time, energy channel width, and deadtime correction Log flux 11 ASCII_Real 1/(cm**2*sr*s*MeV) Flux measurement for the data accumulation interval - if N is the number of counts and F is the one-count flux from the previous two entries, then this measurement is F * N Log flux low 12 ASCII_Real 1/(cm**2*sr*s*MeV) 1-sigma lower limit to flux measurement for the data accumuation interval - if N > 0 this is F * (N - sqrt(N - 0.25)) Log flux high 13 ASCII_Real 1/(cm**2*sr*s*MeV) 1-sigma upper limit to flux measurement for the data accumuation interval - F * (N + 1 + sqrt(N + 0.75)) S/C L 14 ASCII_Real L value for particles mirroring at the spacecraft location at the midpoint of the data accumulatin interval S/C L start 15 ASCII_Real L value for particles mirroring at the spacecraft location at the beginning of the data accumulatin interval S/C L stop 16 ASCII_Real L value for particles mirroring at the spacecraft location at the end of the data accumulatin interval G/C L 17 ASCII_Real L value for guiding center of protons at the midpoint energy of this channel coming down the sensor's boresight at the midpoint of the data accumulatin interval G/C L start 18 ASCII_Real L value for guiding center of protons at the midpoint energy of this channel coming down the sensor's boresight at the beginning of the data accumulatin interval G/C L stop 19 ASCII_Real L value for guiding center of protons at the midpoint energy of this channel coming down the sensor's boresight at the end of the data accumulatin interval