LRO NAC SPICE CK question

Hello,

I’m looking for the whole set of soc31_*.bc CK SPICE files for the LRO LROC-NAC instrument covering the entire LRO mission.

Only recent ones from April 2022 are available on the usgs server under isis3data/data/lro/kernels/ck/

Any help locating the rest of the older files would be much appreciated.

Thank you,
Mike

Hi! Any ideas on this?

You’re looking for the lrolc_YYYYDOY_YYYYDOY_v##.bc kernels, they are the monthly compilations of the daily soc31 kernels. For example, from the comments on lrolc_2022059_2022091_v01.bc:

This file is a compilation of 33 days of SOC-produced Temprature Corrected
LRO spacecraft pointing kernels, from DOY 2022-059 to DOY 2022-091. The following
files were included. In cases where the time periods overlap, the last item
in the list takes precedence:
soc31_2022059_2022060_v01.bc
soc31_2022060_2022061_v01.bc
soc31_2022061_2022062_v01.bc
soc31_2022062_2022063_v01.bc
soc31_2022063_2022064_v01.bc
soc31_2022064_2022065_v01.bc
soc31_2022065_2022066_v01.bc
soc31_2022066_2022067_v01.bc
soc31_2022067_2022068_v01.bc
soc31_2022068_2022069_v01.bc
soc31_2022069_2022070_v01.bc
soc31_2022070_2022071_v01.bc
soc31_2022071_2022072_v01.bc
soc31_2022072_2022073_v01.bc
soc31_2022073_2022074_v01.bc
soc31_2022074_2022075_v01.bc
soc31_2022075_2022076_v01.bc
soc31_2022076_2022077_v01.bc
soc31_2022077_2022078_v01.bc
soc31_2022078_2022079_v01.bc
soc31_2022079_2022080_v01.bc
soc31_2022080_2022081_v01.bc
soc31_2022081_2022082_v01.bc
soc31_2022082_2022083_v02.bc
soc31_2022083_2022084_v01.bc
soc31_2022084_2022085_v01.bc
soc31_2022085_2022086_v01.bc
soc31_2022086_2022087_v01.bc
soc31_2022087_2022088_v01.bc
soc31_2022088_2022089_v01.bc
soc31_2022089_2022090_v01.bc
soc31_2022090_2022091_v01.bc
soc31_2022091_2022092_v01.bc

I see, thank you for the clarification!