JUNO Reference Orientation CK File ============================================================= Created on Nov 27, 2017 by Martin Brennan, JPL. Summary ------------------------------------------------------------- This file contains a study attitude profile using the reference trajectory spk_ref_171106_210731_171109.bsp, which swaps the PJ24 and PJ26 periapse longitudes. The CK starts just after PJ09 and runs until PJ35 after the de-orbit burn. The current baseline attitude profile is used. The PJ24 attitude is updated with a 40 deg Sun-offset study attitude as requested per Nov 8, 2017 Juno Science Team Meeting. Start: 06 NOV 2017 00:00:00.000 UTC Stop : 31 JUL 2021 04:30:00.000 UTC The attitude mode for each perijove pass is listed below: PJ 10 GRAV PJ 11 GRAV PJ 12 GRAV PJ 13 GRAV PJ 14 GRAV PJ 15 GRAV PJ 16 GRAV PJ 17 GRAV PJ 18 MWR-crosstrack (JUNO +Z aligned with JUPITER +Z) PJ 19 GRAV PJ 20 GRAV PJ 21 GRAV PJ 22 GRAV PJ 22 GRAV PJ 23 GRAV PJ 24 40deg-offset PJ 25 GRAV PJ 26 GRAV PJ 27 GRAV PJ 28 GRAV PJ 29 GRAV PJ 30 GRAV PJ 31 GRAV PJ 32 GRAV PJ 33 GRAV PJ 34 GRAV PJ 35 Deorbit (But modeled as EarthPoint) Implementation Notes ------------------------------------------------------------- The JUNO_SPACECRAFT orientation is provided in this file using a combination of two kinds of segments: - segments providing the orientation of the JUNO spin axis (+Z) encapsulated in the orientation of the JUNO_SPIN_AXIS frame (frame ID -61900) relative to the J2000 inertial frame. These segments were generated using SPICE utility program "prediCkt" based on the spin axis pointing profile from the source e-mail. See Appendix 1 below for more details about these segments ("prediCkt" inputs, fit accuracy, etc.) - segments providing the rotation of the spacecraft about the spin axis encapsulated in the orientation of the JUNO_SPACECRAFT frame (frame ID -61000) relative to the JUNO_SPIN_AXIS frame. These segments were generated using SPICE utility program "msopck" based on the rotation profile from the source e-mail. See Appendix 2 below for details about these segments ("msopck" setup parameters, input, etc.). The segments generated by "prediCkt" and "msopck" were merged together into a single file (this file) using SPICE utility "dafcat". After merging the file was augmented with these comments. Modeling Notes ------------------------------------------------------------- Users of this CK file should be aware that: - the time-lines in the source spreadsheet did not include Earth-repointing precessions - the spin axis pointing (+Z of the JUNO_SPIN_AXIS frame) was modeled to be within 0.25 degrees of JUNO-Earth, or JUNO-Anti Orbital Momentum Vector (depending of the attitude mode). The ZX plane of the JUNO_SPIN_AXIS frame was modeled to always contain Ecliptic North, with the +X axis to be as close to it as possible. Coverage ------------------------------------------------------------- This file provides the continuous coverage for the following time period: Begin ET End ET ------------------------ ------------------------ 2017-11-06/00:01:09.184 2021-07-31/04:31:09.184 Related Kernels ------------------------------------------------------------- This was generated with and must be used together with the following kernels: Type Name ---- ------------------------------------------ LSK naif0012.tls SCLK JNO_SCLKSCET.00065.tsc FK juno_v12.tf SPK jup310.bsp SPK spk_ref_171106_210731_171109.bsp Contact Information ------------------------------------------------------------- Contact Marty Brennan (martin.brennan@jpl.nasa.gov), or Stuart Stephens (stuart.k.stephens@jpl.nasa.gov) if you have any questions regarding this file. Appendix 1: Information for Spin Axis Orientation Segments ============================================================= This C-kernels was produced using the SPICE program "prediCkt" on 2017-NOV-27 22:03:01. The following files were provided in support of the construction of the attitude given in this kernel. File Type Name ---- ------------------------------------------ SPK /Users/mbrennan/Documents/JUNO/SPICE/spk/jup310.bsp SPK /Users/mbrennan/Documents/JUNO/SPICE/spk/spk_ref_171106_210731_171109.bsp TEXT /Users/mbrennan/Documents/JUNO/SPICE/lsk/naif0012.tls TEXT /Users/mbrennan/Documents/JUNO/SPICE/pck/pck00010.tpc This C-kernel matches the specification given below to 0.25000 degrees. The text kernel used to specify the orientation of structures included in this file is given below. ============================================================= Spin Axis Orientation ----------------------------------------------------------------- The spin axis Orientation segments contain the orientation data for the JUNO_SPIN_AXIS frame (frame ID -61900) relative to the J2000 inertial frame. This file contains a study attitude profile using the reference trajectory that swaps the PJ24 and PJ26 periapse longitudes. The CK starts just after PJ09 and runs until PJ35 after the de-orbit burn. The current baseline attitude profile is used. The PJ24 attitude is updated with a 40 deg Sun-offset study attitude as requested per Nov 8, 2017 Juno Science Team Meeting. Start: 06 NOV 2017 00:00:00.000 UTC Stop : 31 JUL 2021 04:30:00.000 UTC These segments were generated using PREDICKT with the direction, orientation, and schedule specifications provided below based on the spreadsheet data. The attitude mode for each Perijove pass is listed below: PJ 10 GRAV PJ 11 GRAV PJ 12 GRAV PJ 13 GRAV PJ 14 GRAV PJ 15 GRAV PJ 16 GRAV PJ 17 GRAV PJ 18 MWR-crosstrack (JUNO +Z aligned with JUPITER +Z) PJ 19 GRAV PJ 20 GRAV PJ 21 GRAV PJ 22 GRAV PJ 22 GRAV PJ 23 GRAV PJ 24 40deg-offset PJ 25 GRAV PJ 26 GRAV PJ 27 GRAV PJ 28 GRAV PJ 29 GRAV PJ 30 GRAV PJ 31 GRAV PJ 32 GRAV PJ 33 GRAV PJ 34 GRAV PJ 35 Deorbit (But modeled as EarthPoint) Directions ----------------------------------------------------------------- The directions defined in this section are based on the descriptions from sheet 3 of the spreadsheet. TOSUN is the geometric position of the Sun relative to JUNO. TOEARTH is the geometric position of the Earth relative to JUNO. JUNOPOS is the geometric position of JUNO relative to Jupiter. JUNOVEL is the geometric velocity of JUNO relative to Jupiter. JUNOORB is the JUNO orbital momentum vector computed as the cross product of the JUNO position and velocity relative to Jupiter. JUNOORB14 is the JUNO orbital momentum vector rotated by -14 deg about JUNOPOS. SUNOFF30 is a attitude orientation defined by the Jupiter-Sun vector offset by -30.002432525975280 deg Azimuth (towards Jupiter Dawn) / 0 deg elevation for PJ24, set to achieve a 30 deg Sun-Offset angle. SUNOFF40 is a attitude orientation defined by the Jupiter-Sun vector offset by -40.002433028406081 deg Azimuth (towards Jupiter Dawn) / 0 deg elevation for PJ24, set to achieve a 40 deg Sun-Offset angle. SUNOFF50 is a attitude orientation defined by the Jupiter-Sun vector offset by -50.002433356344469 deg Azimuth (towards Jupiter Dawn) / 0 deg elevation for PJ24, set to achieve a 50 deg Sun-Offset angle. SUNOFF57 is a attitude orientation for PJ24 defined by the JIRAM Team with the J2000 vector [0.7718 0.49133 0.40363] for Ganymede observations, having a Sun-Offset angle of 57.555755234301643 deg. SUNOFF58 is a attitude orientation for PJ24 defined by the JIRAM Team with the J2000 vector [0.78326 0.47512 0.40096] for Ganymede observations, having a Sun-Offset angle of 58.698846019399184 deg. SUNOFF59 is a attitude orientation for PJ24 defined by the JIRAM Team with the J2000 vector [0.78646 0.46955 0.40125] for Ganymede observations, having a Sun-Offset angle of 59.051911397585954 deg. SUNOFFN30P20 is a truncated MWR -30 deg azimuth (towards Jupiter dawn) / +20 deg elevation (towards Jupiter N. Pole) offset from Jupiter-Sun vector for PJ12, set to achieve a 35 deg Sun-offset. ECLIPN is the +Z axis (North pole) of the Ecliptic of J2000 inertial frame (ECLIPJ2000). JOIZ is the reference direction for +Z axis during JOI burn -- RA=268.422 deg, Dec=62.359 deg in EME2000. PRMZ is the reference direction for +Z axis during PRM burn -- RA=268.381 deg, Dec=60.061 deg in EME2000. DEORBITZ is the reference direction for +Z axis during the Deorbit burn -- RA=153.68 deg, Dec=12.39 deg in EME2000. (BUT USES EARTHPOINT) ORBXEARTH is the vector normal to the TOEARTH and JUNOORB vectors in the direction of Jupiter's +Z body axis HALFMWR is an intermediate vector between the TOSUN and -JUNOORB vectors. The TOSUN vector is rotated -20 deg about the ORBXEARTH vector. JUPN is the Jupiter North Pole vector defined in the J2000 frame. \begindata DIRECTION_SPECS += ( 'TOSUN = POSITION OF SUN -' ) DIRECTION_SPECS += ( 'FROM JUNO -' ) DIRECTION_SPECS += ( 'CORRECTION NONE' ) DIRECTION_SPECS += ( 'TOEARTH = POSITION OF EARTH -' ) DIRECTION_SPECS += ( 'FROM JUNO -' ) DIRECTION_SPECS += ( 'CORRECTION NONE' ) DIRECTION_SPECS += ( 'JUNOPOS = POSITION OF JUNO -' ) DIRECTION_SPECS += ( 'FROM JUPITER -' ) DIRECTION_SPECS += ( 'CORRECTION NONE' ) DIRECTION_SPECS += ( 'JUNOVEL = VELOCITY OF JUNO -' ) DIRECTION_SPECS += ( 'FROM JUPITER -' ) DIRECTION_SPECS += ( 'CORRECTION NONE' ) DIRECTION_SPECS += ( 'JUNOORB = CROSS PRODUCT -' ) DIRECTION_SPECS += ( 'JUNOPOS JUNOVEL ' ) DIRECTION_SPECS += ( 'JUNOORB14 = ROTATE JUNOORB -' ) DIRECTION_SPECS += ( '-14 DEGREES -' ) DIRECTION_SPECS += ( 'ABOUT JUNOPOS ' ) DIRECTION_SPECS += ( 'ECLIPN = FIXED ECLIPJ2000 -' ) DIRECTION_SPECS += ( 'XYZ 0 0 1' ) DIRECTION_SPECS += ( 'JOIZ = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 268.422 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 62.359 DEGREES ' ) DIRECTION_SPECS += ( 'PRMZ = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 268.381 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 60.061 DEGREES ' ) DIRECTION_SPECS += ( 'DEORBITZ = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 153.68 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 12.39 DEGREES ' ) DIRECTION_SPECS += ( 'ORBXEARTH = CROSS PRODUCT -' ) DIRECTION_SPECS += ( 'TOEARTH JUNOORB ' ) DIRECTION_SPECS += ( 'HALFMWR = ROTATE TOSUN -' ) DIRECTION_SPECS += ( '-20 DEGREES -' ) DIRECTION_SPECS += ( 'ABOUT ORBXEARTH ' ) DIRECTION_SPECS += ( 'JUPN = FIXED IAU_JUPITER -' ) DIRECTION_SPECS += ( 'XYZ 0 0 1' ) DIRECTION_SPECS += ( 'SUNOFF30 = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 63.34248607 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 21.59666245 DEGREES ' ) DIRECTION_SPECS += ( 'SUNOFF40 = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 52.85940039 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 19.65094730 DEGREES ' ) DIRECTION_SPECS += ( 'SUNOFF50 = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 42.66369131 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 17.11495912 DEGREES ' ) DIRECTION_SPECS += ( 'SUNOFF57 = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 32.48094243 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 23.80533486 DEGREES ' ) DIRECTION_SPECS += ( 'SUNOFF58 = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 31.24070518 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 23.63815423 DEGREES ' ) DIRECTION_SPECS += ( 'SUNOFF59 = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 30.83899430 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 23.65636919 DEGREES ' ) DIRECTION_SPECS += ( 'SUNOFFN30P20 = FIXED J2000 -' ) DIRECTION_SPECS += ( 'RA 6.80951541 DEGREES -' ) DIRECTION_SPECS += ( 'DEC 23.06467095 DEGREES ' ) \begintext Orientations ----------------------------------------------------------------- The orientation modes defined in this section are based on the descriptions from sheet 3 of the spreadsheet. SUNPOINTED orientation has +Z along direction from JUNO to the Sun and Ecliptic North pole defining the ZX plane. EARTHPOINTED orientation has +Z along direction from JUNO to the Earth and Ecliptic North pole defining the ZX plane. MWRNON orientation has -Z along JUNO orbital momentum vector (POS cross VEL) and Ecliptic North pole defining the ZX plane. MWRPON orientation has +Z along JUNO orbital momentum vector (POS cross VEL) and Ecliptic North pole defining the ZX plane. MWRNONTILT14 orientation has -Z along JUNO orbital momentum vector (POS cross VEL) rotated by -14 deg about POS and Ecliptic North pole defining the ZX plane. MWRN30P20 orientation has +Z along -30 deg azimuth (towards Jupiter dawn) / +20 deg elevation (towards Jupiter N. Pole) offset from Jupiter-Sun vector, but is truncated in order to achieve a 35 deg Sun-offset at PJ12. MWRPONTILT14 orientation has +Z along JUNO orbital momentum vector (POS cross VEL) rotated by -14 deg about POS and Ecliptic North pole defining the ZX plane. MWRCROSSTRACK orientation has +Z aligned with Jupiter North Pole vector and the Sun defining the ZX plane. JOIBURN orientation has +Z along the reference direction during the JOI burn and Ecliptic North pole defining the ZX plane. PRMBURN orientation has +Z along the reference direction during the PRM burn and Ecliptic North pole defining the ZX plane. DEORBITBURN orientation has +Z along the reference direction during the DEORBIT burn and Ecliptic North pole defining the ZX plane. HALFMWRATTITUDE orientation has +Z along the reference direction HALFMWR and Ecliptic North pole defining ZX plane. SUNOFFSETNEG30 orientation has +Z along the Jupiter-Sun vector offset by -30.002432525975280 deg Azimuth (towards Jupiter Dawn) / 0 deg elevation for PJ24 in order to achieve a 30 deg Sun-Offset angle, at PJ24 Equator Crossing. SUNOFFSETNEG40 orientation has +Z along the Jupiter-Sun vector offset by -40.002433028406081 deg Azimuth (towards Jupiter Dawn) / 0 deg elevation for PJ24 in order to achieve a 40 deg Sun-Offset angle, at PJ24 Equator Crossing. SUNOFFSETNEG50 orientation has +Z along the Jupiter-Sun vector offset by -50.002433356344469 deg Azimuth (towards Jupiter Dawn) / 0 deg elevation for PJ24 in order to achieve a 50 deg Sun-Offset angle, at PJ24 Equator Crossing. SUNOFFSETNEG57 orientation defined by the JIRAM Team for Ganymede observations during PJ24 with a 57.555755234301643 deg Sun-Offset angle, provided as J2000 vector: [0.7718 0.49133 0.40363]. SUNOFFSETNEG58 orientation defined by the JIRAM Team for Ganymede observations during PJ24 with a 58.698846019399184 deg Sun-Offset angle, provided as J2000 vector: [0.78326 0.47512 0.40096]. SUNOFFSETNEG59 orientation defined by the JIRAM Team for Ganymede observations during PJ24 with a 59.051911397585954 deg Sun-Offset angle, provided as J2000 vector: [0.78646 0.46955 0.40125]. \begindata ORIENTATION_NAME += 'SUNPOINTED' PRIMARY += '+Z = TOSUN' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'EARTHPOINTED' PRIMARY += '+Z = TOEARTH' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'MWRNON' PRIMARY += '-Z = JUNOORB' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'MWRPON' PRIMARY += '+Z = JUNOORB' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'MWRNONTILT14' PRIMARY += '-Z = JUNOORB14' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'MWRN30P20' PRIMARY += '+Z = SUNOFFN30P20' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'MWRPONTILT14' PRIMARY += '+Z = JUNOORB14' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'MWRCROSSTRACK' PRIMARY += '+Z = JUPN' SECONDARY += '-X = TOSUN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'JOIBURN' PRIMARY += '+Z = JOIZ' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'PRMBURN' PRIMARY += '+Z = PRMZ' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'DEORBITBURN' PRIMARY += '+Z = DEORBITZ' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'HALFMWRATTITUDE' PRIMARY += '+Z = HALFMWR' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'SUNOFFSETNEG30' PRIMARY += '+Z = SUNOFF30' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'SUNOFFSETNEG40' PRIMARY += '+Z = SUNOFF40' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'SUNOFFSETNEG50' PRIMARY += '+Z = SUNOFF50' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'SUNOFFSETNEG57' PRIMARY += '+Z = SUNOFF57' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'SUNOFFSETNEG58' PRIMARY += '+Z = SUNOFF58' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' ORIENTATION_NAME += 'SUNOFFSETNEG59' PRIMARY += '+Z = SUNOFF59' SECONDARY += '+X = ECLIPN' BASE_FRAME += 'J2000' \begintext Schedule ----------------------------------------------------------------- The orientation schedule defined in this section implements the spin axis pointing timeline from sheet 1 of the spreadsheet. These times in 'AT' modifiers and START/STOP keywords are given as ETs. Gaps between attitude modes result in smooth turns from one attitude to the next. \begindata CK-SCLK = 61 CK-SPK = -61 CK-FRAMES = -61900 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2017-11-06/00:01:09.184 CK-61900STOP += @2017-12-15/22:10:38.184 \begintext ******************* PJ10 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2017-12-16/14:58:08.184' CK-61900START += @2017-12-15/22:15:38.184 CK-61900STOP += @2017-12-16/23:58:38.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2017-12-17/00:03:38.184 CK-61900STOP += @2018-02-06/18:05:29.184 \begintext ******************* PJ11 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2018-02-07/10:52:59.184' CK-61900START += @2018-02-06/18:10:29.184 CK-61900STOP += @2018-02-07/19:53:29.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2018-02-07/19:58:29.184 CK-61900STOP += @2018-03-31/13:59:35.184 \begintext ******************* PJ12 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2018-04-01/06:47:05.184' CK-61900START += @2018-03-31/14:04:35.184 CK-61900STOP += @2018-04-01/15:47:35.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2018-04-01/15:52:35.184 CK-61900STOP += @2018-05-23/09:53:48.184 \begintext ******************* PJ13 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2018-05-24/02:41:18.184' CK-61900START += @2018-05-23/09:58:48.184 CK-61900STOP += @2018-05-24/11:41:48.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2018-05-24/11:46:48.184 CK-61900STOP += @2018-07-15/09:31:19.184 \begintext ******************* PJ14 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2018-07-16/02:18:49.184' CK-61900START += @2018-07-15/09:36:19.184 CK-61900STOP += @2018-07-16/11:19:19.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2018-07-16/11:24:19.184 CK-61900STOP += @2018-09-06/05:25:36.184 \begintext ******************* PJ15 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2018-09-06/22:13:06.184' CK-61900START += @2018-09-06/05:30:36.184 CK-61900STOP += @2018-09-07/07:13:36.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2018-09-07/07:18:36.184 CK-61900STOP += @2018-10-29/01:19:56.184 \begintext ******************* PJ16 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2018-10-29/18:07:26.184' CK-61900START += @2018-10-29/01:24:56.184 CK-61900STOP += @2018-10-30/03:07:56.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2018-10-30/03:12:56.184 CK-61900STOP += @2018-12-20/21:14:06.184 \begintext ******************* PJ17 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2018-12-21/14:01:36.184' CK-61900START += @2018-12-20/21:19:06.184 CK-61900STOP += @2018-12-21/23:02:06.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2018-12-21/23:07:06.184 CK-61900STOP += @2019-02-12/15:18:29.184 \begintext ******************* PJ18 ****************** \begindata CK-61900ORIENTATION += 'MWRCROSSTRACK AT 2019-02-12/16:20:59.184' CK-61900START += @2019-02-12/15:23:29.184 CK-61900STOP += @2019-02-12/17:18:29.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2019-02-12/17:23:29.184 CK-61900STOP += @2019-04-05/16:27:39.184 \begintext ******************* PJ19 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2019-04-06/09:15:09.184' CK-61900START += @2019-04-05/16:32:39.184 CK-61900STOP += @2019-04-06/18:15:39.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2019-04-06/18:20:39.184 CK-61900STOP += @2019-05-28/12:21:53.184 \begintext ******************* PJ20 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2019-05-29/05:09:23.184' CK-61900START += @2019-05-28/12:26:53.184 CK-61900STOP += @2019-05-29/14:09:53.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2019-05-29/14:14:53.184 CK-61900STOP += @2019-07-20/08:16:24.184 \begintext ******************* PJ21 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2019-07-21/01:03:54.184' CK-61900START += @2019-07-20/08:21:24.184 CK-61900STOP += @2019-07-21/10:04:24.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2019-07-21/10:09:24.184 CK-61900STOP += @2019-09-11/07:54:27.184 \begintext ******************* PJ22 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2019-09-12/00:41:57.184' CK-61900START += @2019-09-11/07:59:27.184 CK-61900STOP += @2019-09-12/09:42:27.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2019-09-12/09:47:27.184 CK-61900STOP += @2019-11-03/03:46:21.184 \begintext ******************* PJ23 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2019-11-03/20:33:51.184' CK-61900START += @2019-11-03/03:51:21.184 CK-61900STOP += @2019-11-04/05:34:21.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2019-11-04/05:39:21.184 CK-61900STOP += @2019-12-25/21:49:37.184 \begintext ******************* PJ24 ****************** \begindata CK-61900ORIENTATION += 'SUNOFFSETNEG40 AT 2019-12-26/17:46:29.184' CK-61900START += @2019-12-25/21:54:37.184 CK-61900STOP += @2019-12-26/23:34:37.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2019-12-26/23:39:37.184 CK-61900STOP += @2020-02-16/22:05:22.184 \begintext ******************* PJ25 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2020-02-17/14:52:52.184' CK-61900START += @2020-02-16/22:10:22.184 CK-61900STOP += @2020-02-17/23:53:22.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2020-02-17/23:58:22.184 CK-61900STOP += @2020-04-09/18:00:51.184 \begintext ******************* PJ26 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2020-04-10/10:48:21.184' CK-61900START += @2020-04-09/18:05:51.184 CK-61900STOP += @2020-04-10/19:48:51.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2020-04-10/19:53:51.184 CK-61900STOP += @2020-06-01/14:33:26.184 \begintext ******************* PJ27 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2020-06-02/07:20:56.184' CK-61900START += @2020-06-01/14:38:26.184 CK-61900STOP += @2020-06-02/16:21:26.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2020-06-02/16:26:26.184 CK-61900STOP += @2020-07-24/10:28:54.184 \begintext ******************* PJ28 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2020-07-25/03:16:24.184' CK-61900START += @2020-07-24/10:33:54.184 CK-61900STOP += @2020-07-25/12:16:54.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2020-07-25/12:21:54.184 CK-61900STOP += @2020-09-15/06:24:22.184 \begintext ******************* PJ29 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2020-09-15/23:11:52.184' CK-61900START += @2020-09-15/06:29:22.184 CK-61900STOP += @2020-09-16/08:12:22.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2020-09-16/08:17:22.184 CK-61900STOP += @2020-11-07/06:03:13.184 \begintext ******************* PJ30 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2020-11-07/22:50:43.184' CK-61900START += @2020-11-07/06:08:13.184 CK-61900STOP += @2020-11-08/07:51:13.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2020-11-08/07:56:13.184 CK-61900STOP += @2020-12-30/01:58:47.184 \begintext ******************* PJ31 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2020-12-30/18:46:17.184' CK-61900START += @2020-12-30/02:03:47.184 CK-61900STOP += @2020-12-31/03:46:47.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2020-12-31/03:51:47.184 CK-61900STOP += @2021-02-20/21:54:06.184 \begintext ******************* PJ32 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2021-02-21/14:41:36.184' CK-61900START += @2021-02-20/21:59:06.184 CK-61900STOP += @2021-02-21/23:42:06.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2021-02-21/23:47:06.184 CK-61900STOP += @2021-04-14/17:50:02.184 \begintext ******************* PJ33 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2021-04-15/10:37:32.184' CK-61900START += @2021-04-14/17:55:02.184 CK-61900STOP += @2021-04-15/19:38:02.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2021-04-15/19:43:02.184 CK-61900STOP += @2021-06-06/13:45:40.184 \begintext ******************* PJ34 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2021-06-07/06:33:10.184' CK-61900START += @2021-06-06/13:50:40.184 CK-61900STOP += @2021-06-07/15:30:40.184 CK-61900ORIENTATION += 'EARTHPOINTED' CK-61900START += @2021-06-07/15:35:40.184 CK-61900STOP += @2021-07-29/04:30:58.184 \begintext ******************* PJ35 ****************** \begindata CK-61900ORIENTATION += 'EARTHPOINTED AT 2021-07-30/04:33:28.184' CK-61900START += @2021-07-29/04:35:58.184 CK-61900STOP += @2021-07-31/04:31:09.184 \begintext Appendix 2: Information for Rotation About Spin Axis Segment ============================================================= ******************************************************************************** MSOPCK SETUP FILE: juno_sc_nom_171106_210731_study_pj24_40off_v01_spin.setup ******************************************************************************** Spin Orientation ----------------------------------------------------------------- The spin orientation segment contains the orientation data representing rotation of the JUNO_SPACECRAFT frame (frame ID -61000) about the JUNO_SPIN_AXIS frame (frame ID -61900). Spin Rate Start UTC End UTC Note --------- ----------------- ----------------- -------- 2 rpm 11/06/17 00:00:00 07/31/21 04:30:00 The profile above was converted to the following input provided to MSOPCK to make this segment (the columns are: start time, stop time, initial orientation as three angles set to zero, and angular velocity representing CCW rotation about +Z): 2017-11-06/00:01:09TDB 2021-07-31/04:31:09TDB 0 0 0 0 0 0.20943951023932 The following MSOPCK setup parameters were used to generate this segment: \begindata LSK_FILE_NAME = '../../SPICE/lsk/naif0012.tls' SCLK_FILE_NAME = '../../SPICE/sclk/JNO_SCLKSCET.00065.tsc' FRAMES_FILE_NAME = '../../SPICE/fk/juno_v12.tf' INTERNAL_FILE_NAME = 'JUNO REF GRAV SPIN ATTITUDE, 11/27/17' CK_TYPE = 2 CK_SEGMENT_ID = 'JUNO REF GRAV SPIN ATTITUDE, 11/27/17' INSTRUMENT_ID = -61000 REFERENCE_FRAME_NAME = 'JUNO_SPIN_AXIS' ANGULAR_RATE_PRESENT = 'YES' INPUT_TIME_TYPE = 'UTC' INPUT_DATA_TYPE = 'EULER ANGLES' EULER_ANGLE_UNITS = 'RADIANS' EULER_ROTATIONS_ORDER = ( 'X' 'Y' 'Z' ) ANGULAR_RATE_FRAME = 'INSTRUMENT' PRODUCER_ID = 'NAIF/JPL' \begintext ******************************************************************************** RUN-TIME OBTAINED META INFORMATION: ******************************************************************************** PRODUCT_CREATION_TIME = 2017-11-27T22:05:07 START_TIME = 2017-11-05T23:59:59.817 STOP_TIME = 2021-07-31T04:29:59.816 ******************************************************************************** INTERPOLATION INTERVALS IN THE FILE SEGMENTS: ******************************************************************************** SEG.SUMMARY: ID -61000, COVERG: 2017-11-05T23:59:59.817 2021-07-31T04:29:59.816 -------------------------------------------------------------------------------- 2017-11-05T23:59:59.817 2021-07-31T04:29:59.816 ******************************************************************************** End of comments.