******************************************************************************** This ephemeris models the point in space that is always exactly halfway between the geographic centers of Earth and its Moon. This Sun-centered EME2000 referenced "body" is given 302 as its NAIF body ID. The construct method is one half of the sum of the Sun-to-Moon and Sun-to-Earth vectors. The ephemeris span extends from approximately 26 hours before to 41 hours after the lunar eclipse on May 16, 2022. The ephemeris is constructed using a 7th order polynomial curve fit to data points at 5-minute increments. ******************************************************************************** MKSPK RUN DATE/TIME: 2022-02-11T20:21:31 MKSPK SETUP FILE: Earth-MoonLocationMidpointSetup.in MKSPK INPUT FILE: Earth-MoonMidpoint-EphemData.in MKSPK OUTPUT FILE: Earth-Moon_midpt_220515_220518.bsp OUTPUT FILE STATUS: NEW FILE ******************************************************************************** \begindata INPUT_DATA_TYPE = 'STATES' OUTPUT_SPK_TYPE = 13 OBJECT_ID = 302 OBJECT_NAME = 'EARTH-MOON MIDPT' CENTER_ID = 10 CENTER_NAME = 'SUN' REF_FRAME_NAME = 'J2000' PRODUCER_ID = 'J. V. McAdams KinetX Inc.' DATA_ORDER = 'EPOCH X Y Z VX VY VZ' INPUT_DATA_UNITS = 'DISTANCES=km' POLYNOM_DEGREE = 7 EPOCH_STR_LENGTH = 22 TIME_WRAPPER = '# TDB' COMMENT_FILE = 'Comments.txt' DATA_DELIMITER = ' ' LINES_PER_RECORD = 1 IGNORE_FIRST_LINE = 1 LEAPSECONDS_FILE = '/nav/input/leapsec/naif0012.tls' PCK_FILE = '/nav/lucy/import/kernels/pck00010.tpc' SEGMENT_ID = 'SPK_STATES_13' \begintext ******************************************************************************** BRIEF -- Version 3.0.0, January 14, 2008 -- Toolkit Version N0064 Summary for: Earth-Moon_midpt_220515_220518.bsp BodieStart of Interval (ET) End of Interval (ET) ---------------------------------- ----------------------------- 302 2022 MAY 15 00:00:00.000 2022 MAY 18 00:00:00.000