New Horizons Solar Wind Around Pluto SWAP Reviewed

New Horizons Solar Wind Around Pluto SWAP Reviewed by S. Joy (primary) Low Energy Plasma Instrument consisting of a Retarding Potential Analyzer (RPA), and Electrostatic Analyzer (ESA), and a deflector (DFL). Mass: 3. 29 kg Power: 2. 84 W Energy (min, max): 30 -7700 e. V Energy Resolution: 1 e. V o Field of View: 270 x 10 o Angular Resolution: N/A -3 Geometric Factor 1. 8 x 10 cm 2 sr e. V/e. V Sweep Time (128 steps) 64 s Accumulation Time 0. 39 s

NH-SWAP Data Set Evaluation Tools Evaluation Machine: Dell Precision M 4800 Operating System: Windows 10 NH-SWAP Review S. Joy 2

Dataset: nh-x-swap-2 -pluto-v 2. 0 NH-X-SWAP-5 -DERIVED-SOLARWIND-V 1. 0 Volume: NHSWSW_3001 Volume Level Files AAREADME Publication date of 2016 -09 -01 precedes review. Label Rev Note “ 2017 -03 -0 “ should be fixed Would be nice to add sentence saying that the data set spans 2008 -10 -10 (post Jupiter) to 2016 -06 -22 but the Pluto flyby is mostly missing because … VOLDESC Publication date of 2016 -09 -01 precedes review. NH-SWAP Review S. Joy 3

Catalog Directory: catinfo. txt - good dataset. cat - stop time given. If this data set may be updated in the future with additional SW data, then the value should be changed to UNK. In the 6 hours around the Pluto flyby there are only two data points while the data on either side are sampled every minute. This should be explained. The exclusion of the flyby data explains why PLUTO is not included as a DATASET_TARGET. Should probably add MCCOMMASETAL 2008 to DS_REF_INFO nh. cat – old version, replace with current nhsc. cat – old version, replace with current ref. cat – Elliott 2016 added to an old version of REF. cat. Copy reference to new version that has ITAR controlled documents removed. Add Funsten et al. reference from error_notes to REF. CAT swap. cat – old version, replace with current NH-SWAP Review S. Joy 4

Document Directory: docinfo. txt - PUB_DATE != 2014 error_notes. txt – good Index Directory: indxinfo. txt index. tab index. lbl checksum. tab - PUB_DATE != 2016 -09 -27 - good - START_TIME = STOP_TIME? Time of what? - good nh-x-swap-2 -pluto-v 2. 0 NH-SWAP Review S. Joy 5

Data Directory: nh_sw_20081010_20160622. lbl – data file has RECORD_TYPE = STREAM, not = FIXED_LENGTH therefore, ^SPREADSHEET = ( "NH_SW_20081010_20160622. CSV", 2 ) can’t give the offset in records, must give it in bytes. ^SPREADSHEET = ( "NH_SW_20081010_20160622. CSV", 308 <BYTES> ) (please verify offset of 308) In last paragraph of main label DESCRIPTION when coordinate systems are being discussed, tell the user which time stamp was used when s/c position vectors were computed (start, stop, center? ) nh_sw_20081010_20160622. csv – good, data are readable and reasonable. nh-x-swap-2 -pluto-v 2. 0 NH-SWAP Review S. Joy 6

Recommendations Data are in good shape and can be certified with minor liens. There is nothing that would prevent a user from being able to use these data today. Most issues appear to be related to the rapid assembly of the volume for review (old files used, pub/release dates not updated, etc. ). The main thing that I’d like to see corrected is the dataset. cat where the exclusion of the Pluto flyby data should be explained. The reason is likely that the number of particles was too low to accurately fit the data (values provide have density = 0). If this is the case, then the explanation would be added to the CONFIDENCE_LEVEL_NOTE. NH-SWAP Review S. Joy 7