BLbluestaq
Conjunction

GET /udl/conjunction

Changed on

Service operation to dynamically query data by a variety of query parameters not specified in this API documentation. See the queryhelp operation (/udl/<datatype>/queryhelp) for more details on valid/required query parameter information.

Request

  • Base URL
    https://unifieddatalibrary.com
  • URL
    https://unifieddatalibrary.com/udl/conjunction
  • Auth
    none declared

Query parameters

tcastring date-time required

Time of closest approach (TCA) in UTC. (YYYY-MM-DDTHH:MM:SS.ssssssZ)

firstResultinteger
maxResultsinteger

Response

OK

idstring

Unique identifier of the record, auto-generated by the system.

classificationMarkingstring required

Classification marking of the data in IC/CAPCO Portion-marked format.

idOnOrbit1string

Unique identifier of the primary satellite on-orbit object, if correlated.

idOnOrbit2string

Unique identifier of the secondary satellite on-orbit object, if correlated.

typestring

The type of data represented in this conjunction record (e.g. CONJUNCTION, CARA-WORKLIST, etc.). If type is null the record is assumed to be a Conjunction.

tcastring date-time required

Time of closest approach (TCA) in UTC.

missDistancenumber double

Distance between objects at Time of Closest Approach (TCA) in meters.

collisionProbnumber double

Probability of Collision is the probability (denoted p, where 0.0<=p<=1.0), that Object1 and Object2 will collide.

collisionProbMethodstring

The method that was used to calculate the collision probability, ex. FOSTER-1992.

ephemName1string

The filename of the primary (object1) ephemeris used in the screening, if applicable.

esId1string

Unique identifier of the parent Ephemeris Set of the primary (object1) ephemeris used in the screening, if applicable.

ephemName2string

The filename of the secondary (object2) ephemeris used in the screening, if applicable.

esId2string

Unique identifier of the parent Ephemeris Set of the secondary (object2) ephemeris used in the screening, if applicable.

relPosRnumber double

Distance between objects along Radial Vector at Time of Closest Approach in meters.

relPosTnumber double

Distance between objects along Tangential Vector in meters.

relPosNnumber double

Distance between objects along Normal vector in meters.

relVelMagnumber double

Closing velocity magnitude (relative speed) at Time of Closest Approach in meters/sec.

relVelRnumber double

Closing velocity between objects along Radial Vector at Time of Closest Approach in meters/sec.

relVelTnumber double

Closing velocity between objects along Tangential Vector in meters/sec.

relVelNnumber double

Closing velocity between objects along Normal Vector in meters/sec.

screenEntryTimestring date-time

The start time in UTC of the screening period for the conjunction assessment.

screenExitTimestring date-time

The stop time in UTC of the screening period for the conjunction assessment.

screenVolumeXnumber double

Component size of screen in X component of RTN (Radial, Transverse and Normal) frame in meters.

screenVolumeYnumber double

Component size of screen in Y component of RTN (Radial, Transverse and Normal) frame in meters.

screenVolumeZnumber double

Component size of screen in Z component of RTN (Radial, Transverse and Normal) frame in meters.

volShapestring

The shape (BOX, ELLIPSOID) of the screening volume.

volEntryTimestring date-time

The time at which the secondary (object2) enters the screening volume, in ISO 8601 UTC format with microsecond precision.

volExitTimestring date-time

The time at which the secondary (object2) exits the screening volume, in ISO 8601 UTC format with microsecond precision.

penetrationLevelSigmanumber double

Penetration Level Sigma.

idStateVector1string

Optional ID of the UDL State Vector at TCA of the primary object. When performing a create, this id will be ignored in favor of the UDL generated id of the stateVector1.

lastObTime1string date-time

Time of last positive metric observation of the primary satellite.

cdAoM1number double

The value of the primary (object1) Area times the drag coefficient over the object Mass, expressed in m^2/kg, used for propagation of the primary state vector and covariance to TCA.

crAoM1number double

The value of the primary (object1) Area times the solar radiation pressure coefficient over the object Mass, expressed in m^2/kg, used for propagation of the primary state vector and covariance to TCA. This parameter is sometimes referred to as AGOM.

thrustAccel1number double

The primary (object1) acceleration, expressed in m/s^2, due to in-track thrust used to propagate the primary state vector and covariance to TCA.

idStateVector2string

Optional ID of the UDL State Vector at TCA of the secondary object. When performing a create, this id will be ignored in favor of the UDL generated id of the stateVector2.

lastObTime2string date-time

Time of last positive metric observation of the secondary satellite.

cdAoM2number double

The value of the secondary (object2) Area times the drag coefficient over the object Mass, expressed in m^2/kg, used for propagation of the primary state vector and covariance to TCA.

crAoM2number double

The value of the secondary (object2) Area times the solar radiation pressure coefficient over the object Mass, expressed in m^2/kg, used for propagation of the primary state vector and covariance to TCA. This parameter is sometimes referred to as AGOM.

thrustAccel2number double

The secondary (object2) acceleration, expressed in m/s^2, due to in-track thrust used to propagate the primary state vector and covariance to TCA.

commentsstring

Additional notes from data providers.

ccirstring

Commander's critical information requirements notes.

concernNotesstring

Emergency comments.

stateDeptNotifiedboolean

Flag indicating if State department was notified.

ownerContactedboolean

Flag indicating if owner was contacted.

rawFileURIstring

Link to filename associated with JMS record.

messageForstring

Spacecraft name(s) for which the Collision message is provided.

messageIdstring

User-provided message ID.

uvwWarnboolean

Used for probability of collision calculation, not Warning/Alert Threshold notifications.

smallRelVelWarningboolean

Used for probability of collision calculation, not Warning/Alert Threshold notifications.

largeRelPosWarningboolean

Used for probability of collision calculation, not Warning/Alert Threshold notifications.

smallCovWarningboolean

Used for probability of collision calculation, not Warning/Alert Threshold notifications.

largeCovWarningboolean

Used for probability of collision calculation, not Warning/Alert Threshold notifications.

transactionIdstring

Optional identifier to track a commercial or marketplace transaction executed to produce this data.

sourcestring required

Source of the data.

originstring

Originating system or organization which produced the data, if different from the source. The origin may be different than the source if the source was a mediating system which forwarded the data on behalf of the origin system. If null, the source may be assumed to be the origin.

originatorstring

Creating agency or owner/operator (may be different than provider who submitted the conjunction message).

eventIdstring

Optional source-provided identifier for this conjunction event. In the case where multiple conjunction records are submitted for the same event, this field can be used to tie them together to the same event.

descriptorstring

Optional source-provided and searchable metadata or descriptor of the data.

dataMode'REAL' | 'TEST' | 'SIMULATED' | 'EXERCISE' required

Indicator of whether the data is REAL, TEST, EXERCISE, or SIMULATED data:

REAL: Data collected or produced that pertains to real-world objects, events, and analysis.

TEST: Specific datasets used to evaluate compliance with specifications and requirements, and for validating technical, functional, and performance characteristics.

EXERCISE: Data pertaining to a government or military exercise. The data may include both real and simulated data.

SIMULATED: Synthetic data generated by a model to mimic real-world datasets.

createdAtstring date-time

Time the row was created in the database.

createdBystring

Application user who created the row in the database.

satNo1integer

Satellite/catalog number of the target on-orbit primary object.

satNo2integer

Satellite/catalog number of the target on-orbit secondary object.

origIdOnOrbit1string

Optional place holder for an OnOrbit ID that does not exist in UDL.

origIdOnOrbit2string

Optional place holder for an OnOrbit ID that does not exist in UDL.

origNetworkstring

The originating source network on which this record was created, auto-populated by the system.

Example response

[
  {
    "id": "CONJUNCTION-ID",
    "classificationMarking": "U",
    "idOnOrbit1": "ONORBIT1-ID",
    "idOnOrbit2": "ONORBIT2-ID",
    "type": "CONJUNCTION",
    "tca": "2021-01-01T01:01:01.123456Z",
    "missDistance": 1.1,
    "collisionProb": 0.5,
    "collisionProbMethod": "FOSTER-1992",
    "ephemName1": "MEME_SPCFT_ABC_2180000_ops_nomnvr_unclassified.oem",
    "esId1": "a2ae2356-6d83-4e4b-896d-ddd1958800fa",
    "ephemName2": "MEME_SPCFT_DEF_2170000_ops_nomnvr_unclassified.txt",
    "esId2": "6fa31433-8beb-4b9b-8bf9-326dbd041c3f",
    "relPosR": 1.1,
    "relPosT": 1.1,
    "relPosN": 1.1,
    "relVelMag": 1.1,
    "relVelR": 1.1,
    "relVelT": 1.1,
    "relVelN": 1.1,
    "screenEntryTime": "2021-01-01T01:01:01.123456Z",
    "screenExitTime": "2021-01-01T01:01:01.123456Z",
    "screenVolumeX": 1.1,
    "screenVolumeY": 1.1,
    "screenVolumeZ": 1.1,
    "volShape": "ELLIPSOID",
    "volEntryTime": "2021-01-01T01:02:01.123456Z",
    "volExitTime": "2021-01-01T01:02:28.123456Z",
    "penetrationLevelSigma": 1.1,
    "idStateVector1": "REF-STATEVECTOR1-ID",
    "lastObTime1": "2021-01-01T01:01:01.123456Z",
    "cdAoM1": 0.016386,
    "crAoM1": 0.013814,
    "thrustAccel1": 0.033814,
    "idStateVector2": "REF-STATEVECTOR2-ID",
    "lastObTime2": "2021-01-01T01:01:01.123456Z",
    "cdAoM2": 0.016386,
    "crAoM2": 0.013814,
    "thrustAccel2": 0.033814,
    "comments": "Example notes",
    "ccir": "Example notes",
    "concernNotes": "Example notes",
    "rawFileURI": "Example link",
    "messageFor": "Message for space craft A",
    "messageId": "MESSAGE-ID",
    "transactionId": "TRANSACTION-ID",
    "source": "Bluestaq",
    "origin": "THIRD_PARTY_DATASOURCE",
    "originator": "some.user",
    "eventId": "some.user",
    "descriptor": "sample_descriptor here",
    "dataMode": "TEST",
    "createdAt": "2018-01-01T16:00:00.123Z",
    "createdBy": "some.user",
    "stateVector1": {
      "idStateVector": "STATEVECTOR-ID",
      "classificationMarking": "U",
      "epoch": "2018-01-01T16:00:00.123456Z",
      "pedigree": "CONJUNCTION",
      "idOnOrbit": "ONORBIT-ID",
      "satNo": 12,
      "origObjectId": "ORIGOBJECT-ID",
      "idOrbitDetermination": "026dd511-8ba5-47d3-9909-836149f87686",
      "msgTs": "2018-01-01T16:00:00.123456Z",
      "uct": true,
      "xpos": -1118.577381,
      "ypos": 3026.231084,
      "zpos": 6167.831808,
      "xvel": -4.25242784,
      "yvel": 5.291107434,
      "zvel": -3.356493869,
      "xaccel": -2.12621392,
      "yaccel": 2.645553717,
      "zaccel": -1.06310696,
      "referenceFrame": "J2000",
      "cov": [
        1.1,
        2.4,
        3.8,
        4.2,
        5.5,
        6
      ],
      "covReferenceFrame": "J2000",
      "covMethod": "CALCULATED",
      "eqCov": [
        1.1,
        2.2
      ],
      "xposAlt1": -1145.688502,
      "yposAlt1": 3020.729572,
      "zposAlt1": 6165.55187,
      "xvelAlt1": -4.270832252,
      "yvelAlt1": 5.27074276,
      "zvelAlt1": -3.365155181,
      "alt1ReferenceFrame": "TEME",
      "xposAlt2": -1456.915926,
      "yposAlt2": -2883.540406,
      "zposAlt2": 6165.55187,
      "xvelAlt2": -1.219814294,
      "yvelAlt2": -6.602080212,
      "zvelAlt2": -3.365155181,
      "alt2ReferenceFrame": "EFG/TDR",
      "posUnc": 0.333399744452,
      "velUnc": 0.000004,
      "mass": 164.5,
      "area": 5.065,
      "solarRadPressCoeff": 0.0244394,
      "dragCoeff": 0.0224391269775,
      "dragArea": 4.739,
      "revNo": 7205,
      "geopotentialModel": "EGM-96",
      "dragModel": "JAC70",
      "lunarSolar": true,
      "solarRadPress": true,
      "srpArea": 4.311,
      "solidEarthTides": true,
      "inTrackThrust": true,
      "bDot": 1.23,
      "edr": 1.23,
      "thrustAccel": 1.23,
      "cmOffset": 1.23,
      "lastObStart": "2022-11-09T11:20:21.247192Z",
      "lastObEnd": "2022-11-09T11:20:21.247192Z",
      "obsAvailable": 376,
      "obsUsed": 374,
      "tracksAvail": 163,
      "tracksUsed": 163,
      "recODSpan": 3.5,
      "actualODSpan": 3.5,
      "residualsAcc": 99.5,
      "solarFluxF10": 1.23,
      "solarFluxF10Avg": 1.23,
      "solarFluxAPAvg": 1.23,
      "taiUtc": 1.23,
      "ut1Utc": 1.23,
      "ut1Rate": 1.23,
      "polarMotionX": 1.23,
      "polarMotionY": 1.23,
      "iau1980Terms": 4,
      "leapSecondTime": "2021-01-01T01:01:01.123Z",
      "integratorMode": "integratorMode",
      "partials": "ANALYTIC",
      "stepMode": "AUTO",
      "fixedStep": true,
      "stepSizeSelection": "AUTO",
      "stepSize": 1.23,
      "errorControl": 1.23,
      "sigmaPosUVW": [
        1.23,
        4.56
      ],
      "sigmaVelUVW": [
        1.23,
        4.56
      ],
      "rms": 0.991,
      "source": "Bluestaq",
      "origin": "THIRD_PARTY_DATASOURCE",
      "dataMode": "TEST",
      "algorithm": "SAMPLE_ALGORITHM",
      "createdAt": "2018-01-01T16:00:00.123Z",
      "createdBy": "some.user",
      "descriptor": "descriptor",
      "missionCenter": "Mission Center A",
      "transactionId": "transactionId",
      "origNetwork": "OPS1",
      "sourceDL": "AXE"
    },
    "stateVector2": {
      "idStateVector": "STATEVECTOR-ID",
      "classificationMarking": "U",
      "epoch": "2018-01-01T16:00:00.123456Z",
      "pedigree": "CONJUNCTION",
      "idOnOrbit": "ONORBIT-ID",
      "satNo": 12,
      "origObjectId": "ORIGOBJECT-ID",
      "idOrbitDetermination": "026dd511-8ba5-47d3-9909-836149f87686",
      "msgTs": "2018-01-01T16:00:00.123456Z",
      "uct": true,
      "xpos": -1118.577381,
      "ypos": 3026.231084,
      "zpos": 6167.831808,
      "xvel": -4.25242784,
      "yvel": 5.291107434,
      "zvel": -3.356493869,
      "xaccel": -2.12621392,
      "yaccel": 2.645553717,
      "zaccel": -1.06310696,
      "referenceFrame": "J2000",
      "cov": [
        1.1,
        2.4,
        3.8,
        4.2,
        5.5,
        6
      ],
      "covReferenceFrame": "J2000",
      "covMethod": "CALCULATED",
      "eqCov": [
        1.1,
        2.2
      ],
      "xposAlt1": -1145.688502,
      "yposAlt1": 3020.729572,
      "zposAlt1": 6165.55187,
      "xvelAlt1": -4.270832252,
      "yvelAlt1": 5.27074276,
      "zvelAlt1": -3.365155181,
      "alt1ReferenceFrame": "TEME",
      "xposAlt2": -1456.915926,
      "yposAlt2": -2883.540406,
      "zposAlt2": 6165.55187,
      "xvelAlt2": -1.219814294,
      "yvelAlt2": -6.602080212,
      "zvelAlt2": -3.365155181,
      "alt2ReferenceFrame": "EFG/TDR",
      "posUnc": 0.333399744452,
      "velUnc": 0.000004,
      "mass": 164.5,
      "area": 5.065,
      "solarRadPressCoeff": 0.0244394,
      "dragCoeff": 0.0224391269775,
      "dragArea": 4.739,
      "revNo": 7205,
      "geopotentialModel": "EGM-96",
      "dragModel": "JAC70",
      "lunarSolar": true,
      "solarRadPress": true,
      "srpArea": 4.311,
      "solidEarthTides": true,
      "inTrackThrust": true,
      "bDot": 1.23,
      "edr": 1.23,
      "thrustAccel": 1.23,
      "cmOffset": 1.23,
      "lastObStart": "2022-11-09T11:20:21.247192Z",
      "lastObEnd": "2022-11-09T11:20:21.247192Z",
      "obsAvailable": 376,
      "obsUsed": 374,
      "tracksAvail": 163,
      "tracksUsed": 163,
      "recODSpan": 3.5,
      "actualODSpan": 3.5,
      "residualsAcc": 99.5,
      "solarFluxF10": 1.23,
      "solarFluxF10Avg": 1.23,
      "solarFluxAPAvg": 1.23,
      "taiUtc": 1.23,
      "ut1Utc": 1.23,
      "ut1Rate": 1.23,
      "polarMotionX": 1.23,
      "polarMotionY": 1.23,
      "iau1980Terms": 4,
      "leapSecondTime": "2021-01-01T01:01:01.123Z",
      "integratorMode": "integratorMode",
      "partials": "ANALYTIC",
      "stepMode": "AUTO",
      "fixedStep": true,
      "stepSizeSelection": "AUTO",
      "stepSize": 1.23,
      "errorControl": 1.23,
      "sigmaPosUVW": [
        1.23,
        4.56
      ],
      "sigmaVelUVW": [
        1.23,
        4.56
      ],
      "rms": 0.991,
      "source": "Bluestaq",
      "origin": "THIRD_PARTY_DATASOURCE",
      "dataMode": "TEST",
      "algorithm": "SAMPLE_ALGORITHM",
      "createdAt": "2018-01-01T16:00:00.123Z",
      "createdBy": "some.user",
      "descriptor": "descriptor",
      "missionCenter": "Mission Center A",
      "transactionId": "transactionId",
      "origNetwork": "OPS1",
      "sourceDL": "AXE"
    },
    "satNo1": 1,
    "satNo2": 2,
    "origIdOnOrbit1": "ORIGONORBIT1-ID",
    "origIdOnOrbit2": "ORIGONORBIT2-ID",
    "origNetwork": "OPS1"
  }
]

Changes

  • bd17bc53681eRevision changes
    • info

      added the optional property // to the response with the status

    • info

      added the optional property // to the response with the status

  • 09bd422d5ac1Revision changes
    • warning

      added the new ECR/ECEF enum value to the // response property for the response status

    • warning

      added the new ECR/ECEF enum value to the // response property for the response status

Some revisions have not been checked yet.