makespk09 Documentation

makespk09 - Convert Lunar Orbiter support data to Naif spk
This program reads an ascii table of Lunar Orbiter support data and
writes the spacecraft positions to a NAIF type-9 spacecraft/planet
kernel.  See the level 2 documentation on the SUPPORT file for the
column headings and format of the table.

After creating an spk, the NAIF program, commnt, should be run to
add comments to the file for documentation.

PROGRAMMER: Debbie A. Cook, U.S.G.S., Flagstaff

Lunar Orbiter mission number

4

Leapseconds kernel

"/usgs/isisd/data/mk98264a.tls"

Planetary constants kernel

"/usgs/isisd/data/pck00005.tpc"

Ascii table of support data

NONE

Output NAIF type 9 SPK
(no default extension)

NONE

NAIF instrument id

NAIF inertial frame of spk data

"J2000"

Segment identifier string

NONE

ADDITIONAL NOTES:

Parm	Description
LOMISS	This is the Lunar Orbiter spacecraft number that will be translated to a NAIF instrument code and used to specify the encoding of the spacecraft clock time.
LEAPFILE	This is the NAIF leapseconds kernel file needed to convert the start time in the geometry table to ephemeris seconds past J2000 and finally to the encoded spacecraft clock ticks stored in the output c-kernel.
PCKFILE	This is the NAIF planetary constants file needed to locate points on a planetary body.
SUPPORT	This file is an ASCII table extracted from the Lunar Orbiter Photographic Supporting Data document. It has the following columns: date, time, spacecraft altitude, subspacecraft latitude, subspacecraft longitude, tilt angle, tilt azimuth angle, and swing angle. All angles are in degrees and distances are in km. The endpoints of the table will be deleted from the spk file, but will be used to interpolate the rest of the states. Table format: yymmdd hhmmss.ss spalt splat splon tilt az swing frame where yymmdd = last 2 digits of the year (67), followed by numeric month and day of the month hhmmss.ss = hour of the day, minutes past the hour, and seconds to the nearest hundredth spalt = spacecraft altitude in km splat = subspacecraft latitude (ographic) degrees splon = subspacecraft longitude degrees tilt = spacecraft orientation tilt angle degrees az = spacecraft orientation tilt azimuth degrees swing = spacecraft orientation swing angle degrees frame = frame number
SPK09TO	This is the name of the NAIF type-09 spacecraft/planet kernel. It will the contain discreet pointing data from the input in a single segment.
INSTID	This is the NAIF instrument id for the input data. NAIF supported instrument id's are listed in the file naif_ids.req. MISSION instrument id Lunar Orbiter 3 all -533 Lunar Orbiter 4 all -534 Lunar Orbiter 5 all -535
REFFRAM	This is the NAIF code for the inertial frame of the data. Typical values are J2000 or B1950.
SEGID	This is an identifying string to reference the data. Example: "GLL SCAN PLT -- NAIF -- 18-NOV-90" would identify a ck as Galileo Orbiter scan platform pointing created by NAIF on November 18, 1990.