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Releases: DigitalArsenal/orbit-accuracy-experiments
Release list
E7 inputs: precise orbits (Sentinel-1, SLR, GNSS)
The precise orbits behind E7's scored targets, byte for byte as their providers serve them, one tar per family with a README (licence, attribution) and MANIFEST.json (SHA-256 per file). Not here, by their terms: Swarm orbits (ESA terms), SET's JB2008 indices (no licence) and the ESA/ESOC GNSS finals (cited, not reproduced); data/e7/MANIFEST.json gives the URL and SHA-256 of each. The asset e7-gnss-final.tar.gz (299 files, SHA-256 56940798b5acff105ced3c874a9c46331b60bef1cc38b04714ae561fef4c3315) was taken down on 2026-10-10, because ESA's web-portal terms leave a question about redistributing ESA/ESOC's orbits (the same files are IGS analysis-centre products). Its members are listed with URL and SHA-256 under releaseAssets in data/e7/MANIFEST.json. A written OK from ESA/ESOC would let it go back up.
| Asset | Files | Bytes | SHA-256 | Licence | Attribution |
|---|---|---|---|---|---|
e7-sentinel1-poeorb.tar.gz |
718 | 424110460 | bac2277c3bb47f0aebc804658df3d3c29cc71218738f24918ed884c6b78bbbd9 |
Copernicus data policy: free, full and open access (Delegated Regulation (EU) No 1159/2013; Regulation (EU) 2021/696, Art. 53) | Copernicus Sentinel data 2025–2026 (files as served). Reference states and results derived from them: "Contains modified Copernicus Sentinel data 2026". |
e7-slr-ilrs.tar.gz |
152 | 19183227 | ad62a600b46ae7762aaa294adba5c767c2f944ca11a5e6e1927436d16974e148 |
ILRS: data and products not copyrighted; citation requested | ILRS data and products (Pearlman et al. 2019, J Geod 93:2161–2180, doi:10.1007/s00190-019-01241-1), from the EUROLAS Data Center, DGFI-TUM (Noll et al. 2019, J Geod 93:2211–2225, doi:10.1007/s00190-018-1207-2). |
e7-slr-nsgf.tar.gz |
673 | 60309820 | 6997941dfaa452d814b588d148cf210099e461f10d1c953589bd39845420069c |
ILRS (not copyrighted, citation requested); BGS/NERC data are open under the Open Government Licence v3.0 (no statement specific to these orbit files) | NERC Space Geodesy Facility (ILRS analysis centre) orbits; contains British Geological Survey materials © UKRI 2026, Open Government Licence v3.0; ILRS citations as in the ILRS row. |
Terms quoted from each provider: https://github.com/DigitalArsenal/orbit-accuracy-experiments/blob/main/docs/data-licenses.md
E6 inputs: SatNOGS ISS waterfall images (CC BY-SA 4.0)
The 889 SatNOGS Network waterfall images of the ISS that experiment E6 measured (2026-08-31 to 2026-10-09), unmodified, in one tar with a README (CC BY-SA 4.0 notice) and MANIFEST.json (each image's observation, ground station, observer, URL and SHA-256). e6-satnogs-iss-waterfalls.json is the list data/e6/MANIFEST.json records (listSha256). SeeSat-L observations are not published (no licence).
| Asset | Files | Bytes | SHA-256 | Licence | Attribution |
|---|---|---|---|---|---|
e6-satnogs-iss-waterfalls.tar |
889 | 1487657984 | c8a9e7db06e7488009df046e1ce7c3fc21870836755e8358a0eb12a32734a582 |
CC BY-SA 4.0 | SatNOGS Network observations (Libre Space Foundation; the station and observer named in each record), https://network.satnogs.org/, CC BY-SA 4.0. |
e6-satnogs-iss-waterfalls.json |
— | 268221 | 26a3e44ef61494c438572ed460583a9e14a17a73fe3111714c1d64a126e18081 |
CC BY-SA 4.0 | SatNOGS Network observations (Libre Space Foundation; the station and observer named in each record), https://network.satnogs.org/, CC BY-SA 4.0. |
Terms quoted from each provider: https://github.com/DigitalArsenal/orbit-accuracy-experiments/blob/main/docs/data-licenses.md
E5 inputs: Sentinel-1 precise orbits
The Copernicus Sentinel-1 precise orbit files (AUX_POEORB) that experiment E5 used as LEO truth, byte for byte as ESA's STEP mirror serves them, in one tar with a README (licence, attribution) and MANIFEST.json (SHA-256, URL and retrieval time per file). data/e5/MANIFEST.json lists every E5 input. Not here, by their terms: ESA Swarm and GRACE-FO densities and Swarm orbits (ESA terms: onward distribution only to recipients who accept them) and SET's JB2008 indices (no licence); data/e5/MANIFEST.json gives their URLs and SHA-256.
| Asset | Files | Bytes | SHA-256 | Licence | Attribution |
|---|---|---|---|---|---|
e5-sentinel1-poeorb.tar |
256 | 153766400 | b9fc1d10f2fd0e1bff50254045294bdd809ee1141df196d6e547ed9229ef3db1 |
Copernicus data policy: free, full and open access (Delegated Regulation (EU) No 1159/2013; Regulation (EU) 2021/696, Art. 53) | Copernicus Sentinel data 2025–2026 (files as served). Reference states and results derived from them: "Contains modified Copernicus Sentinel data 2026". |
Terms quoted from each provider: https://github.com/DigitalArsenal/orbit-accuracy-experiments/blob/main/docs/data-licenses.md
GNSS precise orbits and DE440s used by E1 and E2
Truth products for experiments E1 and E2 (data/e1/MANIFEST.json and results/e2/data/MANIFEST.json list each file with its SHA-256, URL and terms): IGS final orbits (IGS0OPSFIN; the IGS makes its products openly available for use without restriction under its Data and Product Disclaimer and Terms of Use, with citation requested; this is not a Creative Commons licence) and JPL DE440s (public domain). Files are byte-identical to what the providers serve.
ESA/ESOC final orbits (ESA0OPSFIN, 709 files): cited, not reproduced. They were taken down on 2026-10-10 because ESA's web-portal terms leave a question about redistribution, although the same files are IGS analysis-centre products. ESA0OPSFIN-cited.tsv (an asset of this release) lists every file with its SHA-256, size, download URL and retrieval time; fetch them from https://navigation-office.esa.int/products/gnss-products/ and check the hashes. A written OK from ESA/ESOC would let them go back up.
Credits: © Navigation Support Office at ESA/ESOC 2026; IGS analysis-centre products, courtesy of the International GNSS Service (Johnston et al. 2017, doi:10.1007/978-3-319-42928-1). International GNSS Service (IGS) products, courtesy of the IGS and its analysis and data centres. JPL planetary ephemeris DE440 (Park et al. 2021, AJ 161:105, doi:10.3847/1538-3881/abd414), via NASA/JPL NAIF.
Terms: https://igs.org/wp-content/uploads/2020/09/IGS-Data-and-Product-Disclaimer-and-Terms-of-Use-200805.pdf and https://navigation-office.esa.int/Terms_and_Conditions.html. Per-source licences and attribution: https://github.com/DigitalArsenal/orbit-accuracy-experiments/blob/main/docs/data-licenses.md
E3 inputs (large files)
Release assets for experiment E3 (data/e3/MANIFEST.json lists every file with its SHA-256, source URL and terms). Vimpel inputs are withheld until their redistribution terms are confirmed; Space-Track data is never redistributed.
ESA Swarm precise orbits (SP3*COM): cited, not reproduced. On 2026-10-10 the 54 Swarm assets were taken down: ESA lets recipients use its EO data only after they accept ESA's Terms and Conditions, which a public release cannot ensure. Download them from the Swarm dissemination server (https://swarm-diss.eo.esa.int/, free EO Sign In account) and check each against the SHA-256 below.
Credit: © ESA 2026; "Data provided by the European Space Agency (ESA)"; product DOI SW_SP3xCOM_2_ doi:10.57780/esa-8579355.