Dataset for Conjunction Assessment Verification

Background:

This test set was developed for the Traffic Coordination System for Space (TraCSS) and is designed to help space situational awareness (SSA) service providers test their conjunction assessment (CA) algorithms.

The dataset comes with an accompanying “answer key” that lists the conjunctions in the dataset – providing a voluntary tool for self-assessment.

DISCLAIMER: While this ephemeris dataset was crafted to include stressing edge cases in addition to an operational catalog, it is not completely comprehensive (as there are nearly infinite combinations of orbits and conjunction geometries possible). This data was not evaluated (nor is it intended) for use in live operations or as a tool for formal system certification or validation.

These data are available on a full and open basis, with no restrictions on use or dissemination, under the Creative Commons Universal Public Domain Dedication (CC0-1.0).

Files:

This test set is comprised of five (5) total files:

the input ephemeris dataset;
two conjunction data message (CDM) results files, one for a constant spherical screening volume and one for the Space Flight Safety Handbook (SFSH) rectangular screening volumes;
a key for mapping the SFSH screening volumes to specific objects; and
a user’s guide for how to effectively utilize this test set.

There are two different answer keys – the “spherical screening volume results”
and the “SFSH screening volume result” – where the configuration for running each test case is
described in the User’s Guide.

Note: The files below are hosted via Google Drive. You must use a Google account to request access to them. If you are unable to access a Google account, or if your request for access to these files goes unanswered, please contact Anna.Parikka@noaa.gov.

Alternatively, for immediate access, utilize the Google Form (linked below). Access should be immediate – however, if access needs to be manually given, contact Anna.Parikka@noaa.gov. This form does not automatically collect your Google account information. Please manually enter the email address you wish to use for access below.

Dataset Access Google Form (link)

Input	Filename	Size
Ephemeris Dataset	AerospaceIVVDataset_20251009a.tar.gz	20.73 GB
Spherical Screening Volume Results	IVV_Releasable_Dataset_Spherical_DefaultHBR.csv.gz	198.8 MB
SFSH Screening Volume Results	IVV_Releasable_Dataset_SFSH_DiscreteHBR.csv.gz	62.4 MB
SFSH Screening Volume Mappings	AerospaceIVVDataset_20251009a_Size_ScreeningVolumes.cs v.gz	145 KB
User’s Guide	Conjunction_Screening_Testset_Users_Guide.pdf	363 KB