space probe
Enable an agent to recognise a space probe, assess its mission-relevant condition and constraints, and determine which observations, communications and manoeuvres are feasible and authorised.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise a space probe, assess its mission-relevant condition and constraints, and determine which observations, communications and manoeuvres are feasible and authorised.
A space probe is an uncrewed spacecraft designed to investigate celestial bodies or interplanetary space using onboard instruments and to return scientific measurements or collected samples.
It can be Determine whether a proposed observation fits the probe's target geometry, instrument readiness, pointing and resource margins.; Evaluate a candidate manoeuvre against navigation uncertainty, available propulsion and authorised trajectory constraints.; Prepare observation and downlink sequences for validation and approval by the responsible operations authority.; Assess telemetry freshness and fault evidence to identify safe diagnostic or recovery options.; Prioritise scientific data retention and transmission within contact and storage limits.; Assess deployment, target contact or end-of-mission actions against element interfaces and applicable protection requirements..
Distinguishing features
It is a spacecraft designed to conduct investigation without an onboard human crew; remote control does not make it crewed.
Its instruments or measurement functions investigate its target or surrounding space; housekeeping telemetry alone does not establish probe status.
It performs a scientific flight or target-contact role distinct from the launch vehicle that delivers it.
A separately released entry probe or lander has its own operational boundary; an instrument permanently dependent on a host spacecraft remains a payload component.
The term identifies a spacecraft kind; a named mission, a spacecraft design and an individual flight article must be represented separately.
Scope
+ Probe configurations such as flyby spacecraft, orbiters, atmospheric entry probes and landers, with explicit boundaries between attached and independently operating elements
+ Scientific instruments, observation capabilities and onboard handling of scientific data
+ Trajectory, navigation, attitude and target encounter constraints
+ Electrical power, thermal control, propulsion resources and mission-limiting degradation
+ Delayed communications, onboard autonomy, fault responses and command authority
+ Probe-specific contamination controls, target-contact constraints and end-of-mission condition
- Launch vehicles and launch infrastructure, except their interfaces with the probe
- The scientific mission as a programme, including budgets, institutions and staffing
- Ground stations and mission-control systems as independently managed assets
- Celestial bodies and space environments as independently modelled targets
- Scientific datasets and resulting publications as information objects
- Crewed spacecraft and spacecraft whose primary role is transport or operational service rather than scientific investigation
Characteristics
- Investigation target and encounter role
- Target body or space region; flyby, orbital, atmospheric, surface or cruise investigation role Determines which observations, environments and trajectory conditions are relevant.
- Flight-element architecture
- Single spacecraft, carrier with deployable probes, or coordinated spacecraft elements; record element boundaries Prevents attributing one element's instruments, resources or capabilities to another.
- Mission phase and operating mode
- Mission-defined phase and mode, such as cruise, encounter, entry, surface operations, safe mode or inactive Available actions and acceptable risks change with phase and mode.
- Navigation state and uncertainty
- Position in km, velocity in km/s, epoch, reference frame and uncertainty representation Supports encounter prediction, pointing and manoeuvre decisions without treating estimates as exact.
- Propulsive capability
- Remaining usable delta-v in m/s, with estimation assumptions; unavailable or not applicable where appropriate Constrains trajectory correction, orbit changes and disposal options.
- Electrical power margin
- W available and demanded under a specified geometry, phase and operating mode; stored energy in Wh where applicable Determines which instruments, heaters and transmitters can operate together.
- Thermal operating margin
- Component temperature and permitted limits in K, with prediction or measurement timestamp Identifies operations that could exceed survival or performance limits.
- Instrument readiness
- Per instrument: unavailable, off, warming, calibrating, ready, acquiring or degraded; mission-specific extensions Distinguishes an installed instrument from one capable of producing usable observations.
- Pointing performance
- Pointing error and stability in degrees or arcseconds, with reference axis and averaging interval Constrains imaging, antenna alignment and exposure duration.
- Communication opportunity
- One-way light time in s, predicted contact intervals, supported data rate in bit/s and stated link assumptions Determines command timing, data return capacity and required autonomy.
- Onboard data occupancy
- Stored and available capacity in bit or byte, with retention priorities Exposes overwrite risk before observations outpace downlink capacity.
- Applicable operational constraints
- Approved command rules, target-contact restrictions, contamination requirements and their issuing authorities Separates physically possible actions from permitted actions.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 7 bundles · 13 layers · 21 findings · 33 questions.
Probe identity and flight elements Establishes what constitutes the probe and how its scientific role differs from its mission and supporting vehicles.
A mission may contain several spacecraft, and a carrier may deliver a probe without sharing its operational boundary.
Scientific role
Connects the spacecraft kind to its investigation target and encounter role.
Probe membership
Record the investigation function supporting classification as a space probe and any unresolved neighbouring classification.
- Which onboard measurement functions establish this spacecraft's scientific investigation role? definition
- Where does this registry place the boundary between space probes, scientific satellites and other robotic spacecraft? boundary
Element boundaries
Distinguishes the flight article, attached instruments and independently operating deployed elements.
Carrier and deployed elements
Record attachment, separation and dependency relationships without duplicating separately registered kinds.
- Which elements operate independently after separation, and which remain dependent payloads? boundary
- Which engineering configuration record establishes the element identities and separation interfaces? provenance
Trajectory and target access Captures whether the probe can reach, remain near or interact with its intended investigation target.
Probe capabilities depend on encounter geometry and navigation uncertainty as well as installed hardware.
Navigation and encounter
Represents estimated motion relative to the target and the conditions for useful access.
Encounter state
Record trajectory estimates with their epoch, frame, uncertainty and relevant observation windows.
- What estimated trajectory and uncertainty apply at the planned encounter epoch? measurement
- Which target distances, illumination conditions or occultations determine the usable observation windows? measurement
Manoeuvre and contact options
Relates propulsion and deployment capabilities to trajectory changes and target interaction.
Reachable actions
Record feasible manoeuvres or passive encounter options, including required resources and decision deadlines.
- What manoeuvre capability remains, and which propulsion or attitude constraints limit its use? measurement
- Which approved conditions must hold before a correction burn, deployment, entry or landing sequence may proceed? action
Scientific observation and data Links instrument capabilities to valid observations and preservation of their measurement context.
Acquiring data is useful only when calibration, geometry and onboard processing make its scientific meaning recoverable.
Instrument measurement capability
Records what each instrument can measure and under which operating conditions.
Usable measurement envelope
Capture measured quantities, ranges, resolution, calibration status and observation prerequisites per instrument.
- Which quantities, ranges and resolutions can each instrument provide in its present mode? measurement
- Which calibration records and instrument documentation support interpreting those measurements? provenance
Observation execution and retention
Connects planned observations to pointing, timing, storage and data-return limits.
Observation feasibility
Record the conditions for capturing and retaining a scientifically usable observation.
- What pointing accuracy, timing accuracy and target geometry does the proposed observation require? measurement
- Which acquisition, processing and retention choices preserve the required data within available resources? action
Flight resources and survival Models the resource margins and environmental limits that keep the probe operational.
Changing distance, illumination and exposure can alter probe viability throughout a mission.
Power and thermal balance
Relates generation, storage, electrical loads and heat management to flight conditions.
Sustainable operating modes
Record power and thermal margins for each relevant operating mode and encounter condition.
- What generation and storage capability is available under the predicted illumination and degradation state? measurement
- Which instrument, heater and transmitter combinations remain within electrical and thermal limits? action
Degradation and finite resources
Tracks consumables and wear affecting continued observation, pointing and communication.
Mission-limiting condition
Record remaining consumables and evidence of radiation damage, actuator degradation or other capability loss.
- Which resource or degraded component currently limits useful operating life, and how uncertain is that estimate? measurement
- Which supported operating changes could extend useful life while meeting survival constraints? action
Communications and autonomous control Represents command delivery, data return and onboard behaviour when immediate ground intervention is unavailable.
Light time and intermittent contact make delayed state knowledge and autonomous fault handling central to probe operation.
Command and data links
Captures direct or relayed communication opportunities and dependencies.
Contact feasibility
Record link geometry, delay, capacity and relay dependencies for planned contacts.
- What light time, antenna orientation and data rate apply to the next usable contact? measurement
- Which ground or relay assets must be available before commands or stored observations can be transferred? boundary
Onboard decisions and recovery
Defines autonomous execution, fault responses and the authority for changing spacecraft behaviour.
Control authority and state confidence
Separate confirmed telemetry from predicted state and record the permitted scope of autonomous or ground-directed action.
- Which decisions and fault responses may the probe execute autonomously during loss of contact? action
- What telemetry age, command acknowledgements and authorised procedures support the proposed next command? action
Target protection and mission end Records contamination constraints and the probe's permitted disposition after useful operations.
Target contact, accidental impact and sample return can impose constraints beyond ordinary spacecraft survival.
Contamination and contact requirements
Connects the probe's target and contact mode to documented protection obligations.
Applicable protection basis
Record applicable planetary-protection and instrument-cleanliness requirements separately, including their authority and evidence.
- Which protection and cleanliness requirements apply to this target, contact mode and any returned material? boundary
- Which issuing authority, approved mission record and verification evidence establish those requirements? provenance
Terminal state and disposition
Captures intended mission termination, residual capabilities and uncertain post-contact condition.
Permitted end state
Record the approved terminal trajectory or resting state and distinguish confirmed termination from unexplained loss of communication.
- Which end-of-mission action is approved, and what propulsion, power or communication resources must be reserved for it? action
- What evidence establishes the terminal state, and what remains unknown after the last confirmed contact? provenance
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Space probe has no universally sharp boundary; usage commonly emphasizes exploration beyond Earth orbit and sometimes distinguishes probes narrowly from orbiters or landers.
- The measurement ranges are illustrative orders of magnitude, not class limits; verify mission-specific mass definitions and power conditions.
- Standards listed are recalled without source inspection; current editions, adoption and mission-specific applicability require verification.
- Which of these check these first hold for the sense of space probe this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Flyby probe
- Orbiter
- Lander
- Atmospheric entry probe
- Impactor
- Sample-return probe
- Which of these kinds and varieties hold for the sense of space probe this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- International Designator (COSPAR ID) - YYYY-NNN followed by one or more letters - Identifies a catalogued space object by launch year, launch sequence and associated piece; individual mission components may have separate designators.
- NASA Space Science Data Coordinated Archive spacecraft identifier - Often uses the spacecraft's International Designator - Identifies spacecraft records in the archive; mission names and spacecraft identifiers are not interchangeable.
- Which of these identifiers and schemes hold for the sense of space probe this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- COSPAR Planetary Protection Policy - Committee on Space Research; requirements depend on destination and mission type.
- CCSDS Space Packet Protocol - Consultative Committee for Space Data Systems; standardizes packet structures used for spacecraft data.
- CCSDS Time Code Formats - Consultative Committee for Space Data Systems; standardizes representations of time in space data systems.
- Radio Regulations - International Telecommunication Union; governs spectrum allocation and radio operations, including space services.
- Which of these standards and regulation hold for the sense of space probe this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Imaging and mapping planetary surfaces, moons and small bodies.
- Measuring atmospheric composition, structure and weather.
- Investigating magnetic fields, charged particles, solar wind and interplanetary dust.
- Analyzing surface materials and subsurface structure.
- Collecting extraterrestrial samples for laboratory analysis on Earth.
- Which of these real-world use hold for the sense of space probe this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Spacecraft mass - Tens to several thousand, depending strongly on mission and whether propellant is included - kg
- Available electrical power during operations - Tens to thousands, depending on power system, solar distance and mission age - W
- Which of these typical measurements hold for the sense of space probe this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Launch, propulsion or navigation failures preventing arrival or the intended encounter.
- Loss of communication through antenna misalignment, hardware failure or inadequate link margin.
- Power loss or thermal excursions disabling instruments and spacecraft systems.
- Radiation-induced electronic faults, cumulative degradation or damage from particle impacts.
- Entry, descent or landing failure; biological contamination of a target or returned samples is an additional mission-dependent hazard.
- Which of these failure modes and hazards hold for the sense of space probe this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Licensing, spectrum authorization and mission assurance requirements vary by launching state and responsible organization.
- NASA and European missions commonly draw on different agency engineering frameworks, while CCSDS standards support international interoperability.
- Which of these regional variation hold for the sense of space probe this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Spacecraft - Spacecraft is the broader class; a space probe specifically serves uncrewed scientific exploration.
- Artificial satellite - Satellite describes orbital status; an orbiting probe is also a satellite, whereas a flyby or atmospheric entry probe need not be.
- Planetary rover - A rover travels across a surface and may be carried by a probe; it is a distinct mobile exploration element.
- Launch vehicle - A launch vehicle delivers a payload toward its destination; the probe performs the exploration mission.
- Space mission - A mission includes objectives, operations and supporting infrastructure; the probe is a physical spacecraft within it.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of space probe this model covers, and on what evidence? provenance
What the second pass must settle
- Does the existing registry or world-model catalogue already cover space probes, and how does it distinguish them from Earth-orbiting scientific satellites, landers and rovers?
- Should independently deployed atmospheric probes, landers and sample-return elements be represented as instances of this kind, neighbouring kinds or both under explicit relations?
- Which authoritative engineering sources establish representative capability ranges and common failure modes for each probe configuration without implying universal capacities or dimensions?
- Which current standards, issuing bodies and mission-specific approvals govern communications, environmental qualification, planetary protection and terminal disposition, and are any certification marks meaningful for this kind?
- What minimum telemetry evidence should distinguish an operational, degraded, dormant, unreachable or definitively terminated probe?