Pioneer 10

Pioneer 10 is catalogued in this registry as a probe, held in the frame of Earth, from GCAT — artificial space objects.

Registry id GCAT_S05860 · source layer gcat · provenance PROCESSED — derived deterministically from source catalogues (unit, frame and epoch conversions, cross-source reconciliation) — no value invented

Exists from 1972-03-03 01:49:03 UTC (JD 2441379.57574) — no end date is recorded.

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Measured quantities

QuantityValueUncertaintySource
Radius4 mno published uncertainty in this registryGCAT — artificial space objects
Mass270 kgno published uncertainty in this registryGCAT — artificial space objects

Each row carries its own uncertainty and its own source. Where a row says no uncertainty is published, that is what the catalogue says — it is not a claim that the value is exact.

Trajectory, leg by leg

This object's parent frame changes over its life. Each leg names the frame it is expressed in and the source arc it came from. A leg with no geometry is a declared gap — the registry holds no path across it and draws none. This object has 35 legs; the table shows the first and last 12 and counts the rest.

FromToFrameGeometry Source arc
1972-03-03 02:03:59 UTC (JD 2441379.586111111)1972-03-04 22:44:59 UTC (JD 2441381.4479166665)EARTHno geometry in this legsatcat
1972-03-04 22:44:59 UTC (JD 2441381.4479166665)1973-10-01 00:00:00 UTC (JD 2441956.5)SOLorbithcocat
1972-04-01 00:00:00 UTC (JD 2441408.5)open-endedSOLorbithorizons
1973-04-01 00:00:00 UTC (JD 2441773.5)open-endedSOLorbithorizons
1973-10-01 00:00:00 UTC (JD 2441956.5)1974-02-12 00:00:00 UTC (JD 2442090.5)JUPITERno geometry in this leglprcat
1974-02-12 00:00:00 UTC (JD 2442090.5)open-endedSOLno geometry in this leghcocat
1974-04-01 00:00:00 UTC (JD 2442138.5)open-endedSOLorbithorizons
1975-04-01 00:00:00 UTC (JD 2442503.5)open-endedSOLorbithorizons
1976-04-01 00:00:00 UTC (JD 2442869.5)open-endedSOLorbithorizons
1977-04-01 00:00:00 UTC (JD 2443234.5)open-endedSOLorbithorizons
1978-04-01 00:00:00 UTC (JD 2443599.5)open-endedSOLorbithorizons
1979-04-01 00:00:00 UTC (JD 2443964.5)open-endedSOLorbithorizons
… 11 further legs omitted here. The registry holds all 35; the scene draws them.
1991-04-01 00:00:00 UTC (JD 2448347.5)open-endedSOLorbithorizons
1992-04-01 00:00:00 UTC (JD 2448713.5)open-endedSOLorbithorizons
1993-04-01 00:00:00 UTC (JD 2449078.5)open-endedSOLorbithorizons
1994-04-01 00:00:00 UTC (JD 2449443.5)open-endedSOLorbithorizons
1995-04-01 00:00:00 UTC (JD 2449808.5)open-endedSOLorbithorizons
1996-04-01 00:00:00 UTC (JD 2450174.5)open-endedSOLorbithorizons
1997-04-01 00:00:00 UTC (JD 2450539.5)open-endedSOLorbithorizons
1998-04-01 00:00:00 UTC (JD 2450904.5)open-endedSOLorbithorizons
1999-04-01 00:00:00 UTC (JD 2451269.5)open-endedSOLorbithorizons
2000-04-01 00:00:00 UTC (JD 2451635.5)open-endedSOLorbithorizons
2001-04-01 00:00:00 UTC (JD 2452000.5)open-endedSOLorbithorizons
2002-04-01 00:00:00 UTC (JD 2452365.5)open-endedSOLorbithorizons

Classification

Kindprobe
Originartificial (made by humans)
Operating nationUSA
Operator classgovernmental
Launch site codeCC
Launch vehicleAtlas SLV-3C Centaur
Launch outcomesuccess
UN registrationregistered with the United Nations — USA · A/AC.105/INF.255
Planetary protectiontarget Jupiter · contact class none_flyby · COSPAR category probabilistic_era under the policy in force at launch (II under the 2026 policy) · documentation: undocumented — a DOCUMENTATION fact, never a compliance verdict
Separated fromGCAT_S05861 on 1972-03-03 02:03:59 UTC (JD 2441379.586111111)
3-D modelcarries a published mesh

The catalogue's own note

S05860 #05860 1972-012A · aka NAIF023 · ARC/US · mfr TRW · bus Pioneer F · op EEO · dry 243 kg · category PLAN · class C · program Pioneer J · a/e/i GCAT; Ω,ω,M₀ not in GCAT → placeholder spread (ω = 0; display only) [GCAT] · carries an on-board nuclear power source [nuclear: rtg rhu unspecified]: nuclear power source (device not named by the source) + 4 × SNAP-19 RTG + 12 × RHU — declared by UN Online Index of Objects Launched into Outer Space (UNOOSA) + NASA Radioisotope Power Systems Program (NASA/DOE)

Reproduced as the source wrote it. Author-year citations link to their DOI where one is registered.

What this registry does not know about it

These are absences in the catalogues aggregated here, not measurements of zero, and not statements that the quantity is unknown to science:

Where this record comes from

DatabaseGCAT — artificial space objects
AuthorityGCAT — General Catalog of Artificial Space Objects (J. McDowell)
Addresshttps://planet4589.org/space/gcat/tsv
LicenceCC-BY 4.0 — https://planet4589.org/space/gcat/
How it enteredRAW snapshot via scripts/ingest-gcat.ts
Snapshot2026-06-09
Coverage54,915 objects; 1138 multisegment; 349 landed; debris archived, off by default; 1,797 failed-to-orbit objects placed at their launch sites (existence-windowed to their fall); uncatalogued (CSO/analyst) objects included; 36 marked-erroneous (ERR) phantom entries skipped; 20,196 carry a MEASURED Ω/ω/M₀ from a Celestrak GP join, the rest a deterministic placeholder spread; launch log joined by Launch_Tag → site:/lv:/outcome: facets on 54,557 objects (54,508 with minute-precise launch time); 99 deep-space trajectories refined by JPL Horizons navigation arcs (piecewise osculating elements, heliocentric cruise spans only)

This database remains the property of its owners and is reused under its own licence. If you quote a value from this page, name that database alongside SolarSystemRegistry.org.