Difficulties with OreCzml Collision class

Koxx3 · January 12, 2025, 4:03pm

Hello,
I am experiencing difficulties with the Collision class.
Sometimes, it works, sometimes, it doesn’t.
My dates seems valid.
Any help please ?

Executing project : francois/czml_collision_spacetrack2/main.py
[OREKIT_JPYPE_INIT] init : in progress
[OREKIT_JPYPE_INIT] init : ok
gp =  14725
gp =  33111
Satellite 14725 First Orbit Date: 2024-11-19T08:00:00.000Z
Satellite 14725 Last Orbit Date: 2024-11-19T13:00:00.000Z
Satellite 33111 First Orbit Date: 2024-11-19T08:00:00.000Z
Satellite 33111 Last Orbit Date: 2024-11-19T13:00:00.000Z
Covariance propagation completed for Satellite 1.
Covariance propagation completed for Satellite 2.
Propagating covariance for Satellite 1 ('14725')...
Covariance propagation completed for Satellite 1.
--------------------------------------------------
Propagating covariance for Satellite 2 ('33111')...
Covariance propagation completed for Satellite 2.
--------------------------------------------------
Satellite 1 ID: 14725, Covariance Count: 301
Satellite 2 ID: 33111, Covariance Count: 301
Header Clock: {
"clock":{
"interval":"2024-11-19T08:00:00Z/2024-11-19T13:00:00Z",
"currentTime":"2024-11-19T08:00:00Z",
"multiplier":60,
"range":"LOOP_STOP",
"step":"TICK_DEPENDENT"
}

Traceback (most recent call last):
File "Collision.java", line 111, in org.orekit.czml.object.primary.Collision.<init>
An error occurred: agi.foundation.compatibility.ArgumentException: One or more of the hour, minute, and second arguments is outside of the acceptable range.
Exception: Java Exception
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/app/tmp_files/p6Qn7NjwXoh8oqktAAGy/francois/czml_collision_spacetrack2/main.py", line 455, in <module>
main()
File "/app/tmp_files/p6Qn7NjwXoh8oqktAAGy/francois/czml_collision_spacetrack2/main.py", line 417, in main
collision: Collision = Collision(
^^^^^^^^^^
agi.foundation.compatibility.agi.foundation.compatibility.ArgumentException: agi.foundation.compatibility.ArgumentException: One or more of the hour, minute, and second arguments is outside of the acceptable range.

baubin · January 14, 2025, 11:15pm

I don’t know if it will help you or not, but I ran into this error when I was using the Satellite.builder() function:

final Satellite satellite = Satellite.builder(boundedPropagator, header)
                                     .withModelPath(IssModel)
                                     .withColor(Color.PINK)
                                     .withDisplayAttitude()
                                     .build();

It disappeared when I added start and stop dates to the builder:

final Satellite satellite = Satellite.builder(boundedPropagator, header)
                                     .withModelPath(IssModel)
                                     .withColor(Color.PINK)
                                     .withDisplayAttitude()
                                     .withStartDate(startDate)
                                     .withFinalDate(finalDate)
                                     .build();

Essentially what was happening was, because I hadn’t specified start/stop dates for the satellite specifically, the satellite was initializing with a start date that was something like -53457832 BC, which was obviously outside the simulation.

Koxx3 · January 15, 2025, 5:58pm

thanks, but it fails too with start/end dates.

Koxx3 · January 15, 2025, 5:59pm

Not working :

[OREKIT_JPYPE_INIT] init : in progress
[OREKIT_JPYPE_INIT] init : ok
Connected to SQLite database at /storage/spacetrack_data.db
Ensured that the spacetrack_data table exists.
Successfully authenticated with Space-Track.
Processing NORAD ID: 25544
Retrieved data from cache for endpoint: https://www.space-track.org/basicspacedata/query/class/gp/NORAD_CAT_ID/25544/decay_date/null-val/epoch/>now-30/orderby/epoch desc/limit/1/format/json
GP Last Data for NORAD ID 25544: [{'CCSDS_OMM_VERS': '3.0', 'COMMENT': 'GENERATED VIA SPACE-TRACK.ORG API', 'CREATION_DATE': '2025-01-15T14:36:16', 'ORIGINATOR': '18 SPCS', 'OBJECT_NAME': 'ISS (ZARYA)', 'OBJECT_ID': '1998-067A', 'CENTER_NAME': 'EARTH', 'REF_FRAME': 'TEME', 'TIME_SYSTEM': 'UTC', 'MEAN_ELEMENT_THEORY': 'SGP4', 'EPOCH': '2025-01-15T09:31:38.660736', 'MEAN_MOTION': '15.50054085', 'ECCENTRICITY': '0.00019340', 'INCLINATION': '51.6408', 'RA_OF_ASC_NODE': '343.8792', 'ARG_OF_PERICENTER': '100.3261', 'MEAN_ANOMALY': '3.0329', 'EPHEMERIS_TYPE': '0', 'CLASSIFICATION_TYPE': 'U', 'NORAD_CAT_ID': '25544', 'ELEMENT_SET_NO': '999', 'REV_AT_EPOCH': '49146', 'BSTAR': '0.00043163000000', 'MEAN_MOTION_DOT': '0.00024300', 'MEAN_MOTION_DDOT': '0.0000000000000', 'SEMIMAJOR_AXIS': '6794.705', 'PERIOD': '92.900', 'APOAPSIS': '417.884', 'PERIAPSIS': '415.256', 'OBJECT_TYPE': 'PAYLOAD', 'RCS_SIZE': 'LARGE', 'COUNTRY_CODE': 'ISS', 'LAUNCH_DATE': '1998-11-20', 'SITE': 'TTMTR', 'DECAY_DATE': None, 'FILE': '4611375', 'GP_ID': '278236980', 'TLE_LINE0': '0 ISS (ZARYA)', 'TLE_LINE1': '1 25544U 98067A   25015.39697524  .00024300  00000-0  43163-3 0  9997', 'TLE_LINE2': '2 25544  51.6408 343.8792 0001934 100.3261   3.0329 15.50054085491466'}]
Successfully fetched TLE for NORAD ID: 25544
Processing NORAD ID: 62461
Retrieved data from cache for endpoint: https://www.space-track.org/basicspacedata/query/class/gp/NORAD_CAT_ID/62461/decay_date/null-val/epoch/>now-30/orderby/epoch desc/limit/1/format/json
GP Last Data for NORAD ID 62461: [{'CCSDS_OMM_VERS': '3.0', 'COMMENT': 'GENERATED VIA SPACE-TRACK.ORG API', 'CREATION_DATE': '2025-01-15T04:09:50', 'ORIGINATOR': '18 SPCS', 'OBJECT_NAME': 'POEM 4', 'OBJECT_ID': '2024-253C', 'CENTER_NAME': 'EARTH', 'REF_FRAME': 'TEME', 'TIME_SYSTEM': 'UTC', 'MEAN_ELEMENT_THEORY': 'SGP4', 'EPOCH': '2025-01-14T21:56:38.391072', 'MEAN_MOTION': '15.74307386', 'ECCENTRICITY': '0.00051230', 'INCLINATION': '55.2202', 'RA_OF_ASC_NODE': '182.5386', 'ARG_OF_PERICENTER': '314.8557', 'MEAN_ANOMALY': '45.2073', 'EPHEMERIS_TYPE': '0', 'CLASSIFICATION_TYPE': 'U', 'NORAD_CAT_ID': '62461', 'ELEMENT_SET_NO': '999', 'REV_AT_EPOCH': '239', 'BSTAR': '0.00054356000000', 'MEAN_MOTION_DOT': '0.00080026', 'MEAN_MOTION_DDOT': '0.0000000000000', 'SEMIMAJOR_AXIS': '6724.740', 'PERIOD': '91.469', 'APOAPSIS': '350.050', 'PERIAPSIS': '343.160', 'OBJECT_TYPE': 'PAYLOAD', 'RCS_SIZE': 'LARGE', 'COUNTRY_CODE': 'IND', 'LAUNCH_DATE': '2024-12-30', 'SITE': 'SRI', 'DECAY_DATE': None, 'FILE': '4610967', 'GP_ID': '278228183', 'TLE_LINE0': '0 POEM 4', 'TLE_LINE1': '1 62461U 24253C   25014.91433323  .00080026  00000-0  54356-3 0  9997', 'TLE_LINE2': '2 62461  55.2202 182.5386 0005123 314.8557  45.2073 15.74307386  2393'}]
Successfully fetched TLE for NORAD ID: 62461
Traceback (most recent call last):
Fetched TLEs: [[{'CCSDS_OMM_VERS': '3.0', 'COMMENT': 'GENERATED VIA SPACE-TRACK.ORG API', 'CREATION_DATE': '2025-01-15T14:36:16', 'ORIGINATOR': '18 SPCS', 'OBJECT_NAME': 'ISS (ZARYA)', 'OBJECT_ID': '1998-067A', 'CENTER_NAME': 'EARTH', 'REF_FRAME': 'TEME', 'TIME_SYSTEM': 'UTC', 'MEAN_ELEMENT_THEORY': 'SGP4', 'EPOCH': '2025-01-15T09:31:38.660736', 'MEAN_MOTION': '15.50054085', 'ECCENTRICITY': '0.00019340', 'INCLINATION': '51.6408', 'RA_OF_ASC_NODE': '343.8792', 'ARG_OF_PERICENTER': '100.3261', 'MEAN_ANOMALY': '3.0329', 'EPHEMERIS_TYPE': '0', 'CLASSIFICATION_TYPE': 'U', 'NORAD_CAT_ID': '25544', 'ELEMENT_SET_NO': '999', 'REV_AT_EPOCH': '49146', 'BSTAR': '0.00043163000000', 'MEAN_MOTION_DOT': '0.00024300', 'MEAN_MOTION_DDOT': '0.0000000000000', 'SEMIMAJOR_AXIS': '6794.705', 'PERIOD': '92.900', 'APOAPSIS': '417.884', 'PERIAPSIS': '415.256', 'OBJECT_TYPE': 'PAYLOAD', 'RCS_SIZE': 'LARGE', 'COUNTRY_CODE': 'ISS', 'LAUNCH_DATE': '1998-11-20', 'SITE': 'TTMTR', 'DECAY_DATE': None, 'FILE': '4611375', 'GP_ID': '278236980', 'TLE_LINE0': '0 ISS (ZARYA)', 'TLE_LINE1': '1 25544U 98067A   25015.39697524  .00024300  00000-0  43163-3 0  9997', 'TLE_LINE2': '2 25544  51.6408 343.8792 0001934 100.3261   3.0329 15.50054085491466'}], [{'CCSDS_OMM_VERS': '3.0', 'COMMENT': 'GENERATED VIA SPACE-TRACK.ORG API', 'CREATION_DATE': '2025-01-15T04:09:50', 'ORIGINATOR': '18 SPCS', 'OBJECT_NAME': 'POEM 4', 'OBJECT_ID': '2024-253C', 'CENTER_NAME': 'EARTH', 'REF_FRAME': 'TEME', 'TIME_SYSTEM': 'UTC', 'MEAN_ELEMENT_THEORY': 'SGP4', 'EPOCH': '2025-01-14T21:56:38.391072', 'MEAN_MOTION': '15.74307386', 'ECCENTRICITY': '0.00051230', 'INCLINATION': '55.2202', 'RA_OF_ASC_NODE': '182.5386', 'ARG_OF_PERICENTER': '314.8557', 'MEAN_ANOMALY': '45.2073', 'EPHEMERIS_TYPE': '0', 'CLASSIFICATION_TYPE': 'U', 'NORAD_CAT_ID': '62461', 'ELEMENT_SET_NO': '999', 'REV_AT_EPOCH': '239', 'BSTAR': '0.00054356000000', 'MEAN_MOTION_DOT': '0.00080026', 'MEAN_MOTION_DDOT': '0.0000000000000', 'SEMIMAJOR_AXIS': '6724.740', 'PERIOD': '91.469', 'APOAPSIS': '350.050', 'PERIAPSIS': '343.160', 'OBJECT_TYPE': 'PAYLOAD', 'RCS_SIZE': 'LARGE', 'COUNTRY_CODE': 'IND', 'LAUNCH_DATE': '2024-12-30', 'SITE': 'SRI', 'DECAY_DATE': None, 'FILE': '4610967', 'GP_ID': '278228183', 'TLE_LINE0': '0 POEM 4', 'TLE_LINE1': '1 62461U 24253C   25014.91433323  .00080026  00000-0  54356-3 0  9997', 'TLE_LINE2': '2 62461  55.2202 182.5386 0005123 314.8557  45.2073 15.74307386  2393'}]]
Satellite 25544 First Orbit Date: 2024-11-19T08:00:00.000Z
Satellite 25544 Last Orbit Date: 2024-11-19T13:00:00.000Z
Satellite 62461 First Orbit Date: 2024-11-19T08:00:00.000Z
Satellite 62461 Last Orbit Date: 2024-11-19T13:00:00.000Z
Covariance propagation completed for Satellite 1.
Covariance propagation completed for Satellite 2.
Satellite 25544 First Covariance Date: 2024-11-19T08:00:00.000Z
Satellite 25544 Last Covariance Date: 2024-11-19T13:00:00.000Z
Satellite 62461 First Covariance Date: 2024-11-19T08:00:00.000Z
Satellite 62461 Last Covariance Date: 2024-11-19T13:00:00.000Z
Propagating covariance for Satellite 1 ('25544')...
Covariance propagation completed for Satellite 1.
--------------------------------------------------
Propagating covariance for Satellite 2 ('62461')...
Covariance propagation completed for Satellite 2.
--------------------------------------------------
Satellite 1 ID: 25544, Covariance Count: 301
Satellite 2 ID: 62461, Covariance Count: 301
Header Clock: {
"clock":{
"interval":"2024-11-19T08:00:00Z/2024-11-19T13:00:00Z",
"currentTime":"2024-11-19T08:00:00Z",
"multiplier":60,
"range":"LOOP_STOP",
"step":"TICK_DEPENDENT"
}
Database connection closed.
Database connection closed.
File "Collision.java", line 111, in org.orekit.czml.object.primary.Collision.<init>
Exception: Java Exception
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/app/tmp_files/VuSsSK0ftaUx7MNUAAAI/francois/czml_collision_spacetrack2/main.py", line 461, in <module>
main()
File "/app/tmp_files/VuSsSK0ftaUx7MNUAAAI/francois/czml_collision_spacetrack2/main.py", line 416, in main
collision: Collision = Collision(
^^^^^^^^^^
agi.foundation.compatibility.agi.foundation.compatibility.ArgumentException: agi.foundation.compatibility.ArgumentException: One or more of the hour, minute, and second arguments is outside of the acceptable range.

Working :

[OREKIT_JPYPE_INIT] init : in progress
[OREKIT_JPYPE_INIT] init : ok
Connected to SQLite database at /storage/spacetrack_data.db
Ensured that the spacetrack_data table exists.
Successfully authenticated with Space-Track.
Processing NORAD ID: 25544
Retrieved data from cache for endpoint: https://www.space-track.org/basicspacedata/query/class/gp/NORAD_CAT_ID/25544/decay_date/null-val/epoch/>now-30/orderby/epoch desc/limit/1/format/json
GP Last Data for NORAD ID 25544: [{'CCSDS_OMM_VERS': '3.0', 'COMMENT': 'GENERATED VIA SPACE-TRACK.ORG API', 'CREATION_DATE': '2025-01-15T14:36:16', 'ORIGINATOR': '18 SPCS', 'OBJECT_NAME': 'ISS (ZARYA)', 'OBJECT_ID': '1998-067A', 'CENTER_NAME': 'EARTH', 'REF_FRAME': 'TEME', 'TIME_SYSTEM': 'UTC', 'MEAN_ELEMENT_THEORY': 'SGP4', 'EPOCH': '2025-01-15T09:31:38.660736', 'MEAN_MOTION': '15.50054085', 'ECCENTRICITY': '0.00019340', 'INCLINATION': '51.6408', 'RA_OF_ASC_NODE': '343.8792', 'ARG_OF_PERICENTER': '100.3261', 'MEAN_ANOMALY': '3.0329', 'EPHEMERIS_TYPE': '0', 'CLASSIFICATION_TYPE': 'U', 'NORAD_CAT_ID': '25544', 'ELEMENT_SET_NO': '999', 'REV_AT_EPOCH': '49146', 'BSTAR': '0.00043163000000', 'MEAN_MOTION_DOT': '0.00024300', 'MEAN_MOTION_DDOT': '0.0000000000000', 'SEMIMAJOR_AXIS': '6794.705', 'PERIOD': '92.900', 'APOAPSIS': '417.884', 'PERIAPSIS': '415.256', 'OBJECT_TYPE': 'PAYLOAD', 'RCS_SIZE': 'LARGE', 'COUNTRY_CODE': 'ISS', 'LAUNCH_DATE': '1998-11-20', 'SITE': 'TTMTR', 'DECAY_DATE': None, 'FILE': '4611375', 'GP_ID': '278236980', 'TLE_LINE0': '0 ISS (ZARYA)', 'TLE_LINE1': '1 25544U 98067A   25015.39697524  .00024300  00000-0  43163-3 0  9997', 'TLE_LINE2': '2 25544  51.6408 343.8792 0001934 100.3261   3.0329 15.50054085491466'}]
Successfully fetched TLE for NORAD ID: 25544
Processing NORAD ID: 49044
Retrieved data from cache for endpoint: https://www.space-track.org/basicspacedata/query/class/gp/NORAD_CAT_ID/49044/decay_date/null-val/epoch/>now-30/orderby/epoch desc/limit/1/format/json
GP Last Data for NORAD ID 49044: [{'CCSDS_OMM_VERS': '3.0', 'COMMENT': 'GENERATED VIA SPACE-TRACK.ORG API', 'CREATION_DATE': '2025-01-15T04:09:50', 'ORIGINATOR': '18 SPCS', 'OBJECT_NAME': 'ISS (NAUKA)', 'OBJECT_ID': '2021-066A', 'CENTER_NAME': 'EARTH', 'REF_FRAME': 'TEME', 'TIME_SYSTEM': 'UTC', 'MEAN_ELEMENT_THEORY': 'SGP4', 'EPOCH': '2025-01-14T20:42:18.171648', 'MEAN_MOTION': '15.50015612', 'ECCENTRICITY': '0.00022250', 'INCLINATION': '51.6381', 'RA_OF_ASC_NODE': '346.5288', 'ARG_OF_PERICENTER': '92.5832', 'MEAN_ANOMALY': '267.5412', 'EPHEMERIS_TYPE': '0', 'CLASSIFICATION_TYPE': 'U', 'NORAD_CAT_ID': '49044', 'ELEMENT_SET_NO': '999', 'REV_AT_EPOCH': '19633', 'BSTAR': '0.00029328000000', 'MEAN_MOTION_DOT': '0.00016326', 'MEAN_MOTION_DDOT': '0.0000000000000', 'SEMIMAJOR_AXIS': '6794.817', 'PERIOD': '92.902', 'APOAPSIS': '418.194', 'PERIAPSIS': '415.171', 'OBJECT_TYPE': 'PAYLOAD', 'RCS_SIZE': 'LARGE', 'COUNTRY_CODE': 'CIS', 'LAUNCH_DATE': '2021-07-21', 'SITE': 'TTMTR', 'DECAY_DATE': None, 'FILE': '4610967', 'GP_ID': '278218838', 'TLE_LINE0': '0 ISS (NAUKA)', 'TLE_LINE1': '1 49044U 21066A   25014.86271032  .00016326  00000-0  29328-3 0  9992', 'TLE_LINE2': '2 49044  51.6381 346.5288 0002225  92.5832 267.5412 15.50015612196338'}]
Successfully fetched TLE for NORAD ID: 49044
Fetched TLEs: [[{'CCSDS_OMM_VERS': '3.0', 'COMMENT': 'GENERATED VIA SPACE-TRACK.ORG API', 'CREATION_DATE': '2025-01-15T14:36:16', 'ORIGINATOR': '18 SPCS', 'OBJECT_NAME': 'ISS (ZARYA)', 'OBJECT_ID': '1998-067A', 'CENTER_NAME': 'EARTH', 'REF_FRAME': 'TEME', 'TIME_SYSTEM': 'UTC', 'MEAN_ELEMENT_THEORY': 'SGP4', 'EPOCH': '2025-01-15T09:31:38.660736', 'MEAN_MOTION': '15.50054085', 'ECCENTRICITY': '0.00019340', 'INCLINATION': '51.6408', 'RA_OF_ASC_NODE': '343.8792', 'ARG_OF_PERICENTER': '100.3261', 'MEAN_ANOMALY': '3.0329', 'EPHEMERIS_TYPE': '0', 'CLASSIFICATION_TYPE': 'U', 'NORAD_CAT_ID': '25544', 'ELEMENT_SET_NO': '999', 'REV_AT_EPOCH': '49146', 'BSTAR': '0.00043163000000', 'MEAN_MOTION_DOT': '0.00024300', 'MEAN_MOTION_DDOT': '0.0000000000000', 'SEMIMAJOR_AXIS': '6794.705', 'PERIOD': '92.900', 'APOAPSIS': '417.884', 'PERIAPSIS': '415.256', 'OBJECT_TYPE': 'PAYLOAD', 'RCS_SIZE': 'LARGE', 'COUNTRY_CODE': 'ISS', 'LAUNCH_DATE': '1998-11-20', 'SITE': 'TTMTR', 'DECAY_DATE': None, 'FILE': '4611375', 'GP_ID': '278236980', 'TLE_LINE0': '0 ISS (ZARYA)', 'TLE_LINE1': '1 25544U 98067A   25015.39697524  .00024300  00000-0  43163-3 0  9997', 'TLE_LINE2': '2 25544  51.6408 343.8792 0001934 100.3261   3.0329 15.50054085491466'}], [{'CCSDS_OMM_VERS': '3.0', 'COMMENT': 'GENERATED VIA SPACE-TRACK.ORG API', 'CREATION_DATE': '2025-01-15T04:09:50', 'ORIGINATOR': '18 SPCS', 'OBJECT_NAME': 'ISS (NAUKA)', 'OBJECT_ID': '2021-066A', 'CENTER_NAME': 'EARTH', 'REF_FRAME': 'TEME', 'TIME_SYSTEM': 'UTC', 'MEAN_ELEMENT_THEORY': 'SGP4', 'EPOCH': '2025-01-14T20:42:18.171648', 'MEAN_MOTION': '15.50015612', 'ECCENTRICITY': '0.00022250', 'INCLINATION': '51.6381', 'RA_OF_ASC_NODE': '346.5288', 'ARG_OF_PERICENTER': '92.5832', 'MEAN_ANOMALY': '267.5412', 'EPHEMERIS_TYPE': '0', 'CLASSIFICATION_TYPE': 'U', 'NORAD_CAT_ID': '49044', 'ELEMENT_SET_NO': '999', 'REV_AT_EPOCH': '19633', 'BSTAR': '0.00029328000000', 'MEAN_MOTION_DOT': '0.00016326', 'MEAN_MOTION_DDOT': '0.0000000000000', 'SEMIMAJOR_AXIS': '6794.817', 'PERIOD': '92.902', 'APOAPSIS': '418.194', 'PERIAPSIS': '415.171', 'OBJECT_TYPE': 'PAYLOAD', 'RCS_SIZE': 'LARGE', 'COUNTRY_CODE': 'CIS', 'LAUNCH_DATE': '2021-07-21', 'SITE': 'TTMTR', 'DECAY_DATE': None, 'FILE': '4610967', 'GP_ID': '278218838', 'TLE_LINE0': '0 ISS (NAUKA)', 'TLE_LINE1': '1 49044U 21066A   25014.86271032  .00016326  00000-0  29328-3 0  9992', 'TLE_LINE2': '2 49044  51.6381 346.5288 0002225  92.5832 267.5412 15.50015612196338'}]]
Satellite 25544 First Orbit Date: 2024-11-19T08:00:00.000Z
Satellite 25544 Last Orbit Date: 2024-11-19T13:00:00.000Z
Satellite 49044 First Orbit Date: 2024-11-19T08:00:00.000Z
Satellite 49044 Last Orbit Date: 2024-11-19T13:00:00.000Z
Covariance propagation completed for Satellite 1.
Covariance propagation completed for Satellite 2.
Satellite 25544 First Covariance Date: 2024-11-19T08:00:00.000Z
Satellite 25544 Last Covariance Date: 2024-11-19T13:00:00.000Z
Satellite 49044 First Covariance Date: 2024-11-19T08:00:00.000Z
Satellite 49044 Last Covariance Date: 2024-11-19T13:00:00.000Z
Propagating covariance for Satellite 1 ('25544')...
Covariance propagation completed for Satellite 1.
--------------------------------------------------
Propagating covariance for Satellite 2 ('49044')...
Covariance propagation completed for Satellite 2.
--------------------------------------------------
Satellite 1 ID: 25544, Covariance Count: 301
Satellite 2 ID: 49044, Covariance Count: 301
Header Clock: {
"clock":{
"interval":"2024-11-19T08:00:00Z/2024-11-19T13:00:00Z",
"currentTime":"2024-11-19T08:00:00Z",
"multiplier":60,
"range":"LOOP_STOP",
"step":"TICK_DEPENDENT"
}
Collision construction OK

Zudo · January 16, 2025, 10:12am

Hello @Koxx3 @baubin , it is not explained in the wiki because I did not have the time to do it. But the collision class is still under experiment, I also ran into a lot of errors while using it.

I would advise you to use independently the CzmlEllipsoid in spacecraft, and check visually if they cross

The aim of the class in the 1.1 will be to show a different color when two ellipsoid of covariances cross to show a potential collision. For the moment, it is absolutly not doing it correctly and I’m sorry for that.

baubin · January 16, 2025, 4:53pm

@Zudo I was actually running something else entirely and just posted the (very minor) issue I had because the content of the error matched what @Koxx3 was seeing and I hoped it might help. No worries to you having this library is great and you’re doing a great job.

Koxx3 · January 16, 2025, 7:06pm

thanks for the reply. I’ll switch to CzmlEllipsoid for now.