ExoMars Trace Gas Orbiter

E410442

Mars orbiter interplanetary spacecraft space probe

The ExoMars Trace Gas Orbiter is a European-Russian Mars spacecraft designed primarily to study trace gases in the Martian atmosphere, especially methane, to investigate potential geological or biological activity.

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All labels observed (3)

Label	Occurrences
Trace Gas Orbiter	6
ExoMars 2016 mission	2
ExoMars Trace Gas Orbiter canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T4065447 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: ExoMars Trace Gas Orbiter
Context triple: [ExoMars programme, componentMission, ExoMars Trace Gas Orbiter]

A. Mars Express
Mars Express is a European Space Agency spacecraft launched in 2003 to study Mars’ atmosphere, surface, and subsurface from orbit.
B. ExoMars programme
The ExoMars programme is a joint European-led Mars exploration initiative focused on searching for signs of past or present life and demonstrating key technologies for future missions to the Red Planet.
C. Venus Express
Venus Express was a European Space Agency spacecraft that orbited Venus to study its atmosphere, climate, and surface characteristics from 2006 to 2014.
D. Hermes spacecraft
The Hermes spacecraft is the advanced interplanetary vessel in Andy Weir’s novel and its film adaptation "The Martian," used by NASA’s Ares crew for travel between Earth and Mars.
E. MAVEN spacecraft
The MAVEN spacecraft is a NASA Mars orbiter designed to study the planet’s upper atmosphere and its role in the loss of Martian water and air to space.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: ExoMars Trace Gas Orbiter
Target entity description: The ExoMars Trace Gas Orbiter is a European-Russian Mars spacecraft designed primarily to study trace gases in the Martian atmosphere, especially methane, to investigate potential geological or biological activity.

A. Mars Express
Mars Express is a European Space Agency spacecraft launched in 2003 to study Mars’ atmosphere, surface, and subsurface from orbit.
B. ExoMars programme
The ExoMars programme is a joint European-led Mars exploration initiative focused on searching for signs of past or present life and demonstrating key technologies for future missions to the Red Planet.
C. Venus Express
Venus Express was a European Space Agency spacecraft that orbited Venus to study its atmosphere, climate, and surface characteristics from 2006 to 2014.
D. Hermes spacecraft
The Hermes spacecraft is the advanced interplanetary vessel in Andy Weir’s novel and its film adaptation "The Martian," used by NASA’s Ares crew for travel between Earth and Mars.
E. MAVEN spacecraft
The MAVEN spacecraft is a NASA Mars orbiter designed to study the planet’s upper atmosphere and its role in the loss of Martian water and air to space.
F. None of above. chosen

Statements (50)

Predicate	Object
instanceOf	Mars orbiter ⓘ interplanetary spacecraft ⓘ space probe ⓘ
abbreviation	TGO ⓘ
aerobrakingPhase	2016-2018 ⓘ
arrivalAtMarsDate	2016-10-19 ⓘ
carries	Schiaparelli EDM as entry, descent and landing demonstrator ⓘ
collaborationBetween	Europe and Russia ⓘ
cooperationAgency	Roscosmos State Corporation for Space Activities ⓘ linked to: Roscosmos
designedBy	European Space Agency ⓘ
enteredOrbitAround	Mars ⓘ
focusesOn	potential biological sources of methane ⓘ potential geological sources of methane ⓘ
fullName	Exobiology on Mars Trace Gas Orbiter ⓘ
instrument	ACS ⓘ CaSSIS ⓘ FREND ⓘ NOMAD ⓘ
launchCountry	Kazakhstan ⓘ
launchDate	2016-03-14 ⓘ
launchSite	Baikonur Cosmodrome ⓘ
launchVehicle	Proton-M ⓘ linked to: Proton rocket
manufacturer	Thales Alenia Space ⓘ linked to: Thales Alenia Space Italia
missionPhase	science orbit ⓘ
missionStatus	operational ⓘ
missionType	Mars science mission ⓘ atmospheric research ⓘ
operator	European Space Agency ⓘ Roscosmos ⓘ
orbits	Mars in a near-circular science orbit ⓘ
partOf	ExoMars programme ⓘ
primaryObjective	investigate methane on Mars ⓘ search for signs of past or present biological activity ⓘ study trace gases in the Martian atmosphere ⓘ
programPhase	ExoMars 2016 mission ⓘ linked to: ExoMars programme
provides	telecommunications relay for surface assets on Mars ⓘ
relatedEvent	Schiaparelli EDM landing attempt on Mars in 2016 ⓘ
scientificDiscipline	astrobiology ⓘ atmospheric physics ⓘ planetary science ⓘ
secondaryObjective	provide data relay for Mars landers and rovers ⓘ
spacecraftBus	ESA-built orbiter platform ⓘ
startOfScienceOperations	2018-04 ⓘ
studies	atmospheric chemistry of Mars ⓘ methane distribution in the Martian atmosphere ⓘ other trace gases in the Martian atmosphere ⓘ seasonal and spatial variations of trace gases ⓘ surface-atmosphere interactions on Mars ⓘ water vapour and its isotopes on Mars ⓘ
targetBody	Mars ⓘ

How these facts were elicited