{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.celestial-body","code":"thing-q1519541","url":"https://ver.cy/models/thing/q1519541/","name":"celestial body","alternateNames":[],"kind":"thing","status":"research-draft","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.SPC"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A naturally occurring physical entity in space, such as a star, planet, dwarf planet, moon, asteroid, comet or nebula, as distinguished from artificial satellites; in astronomy and law the term overlaps with astronomical object, and in space law celestial bodies are subject to the Outer Space Treaty.","purpose":"Let an agent classify celestial bodies, explain their types and properties, support observation and education, and explain their legal status under space law.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Natural","Located in space","Classified by type","Subject to space law"],"structure":{"bundles":[{"id":"classify","name":"Classify","description":"What kind of body.","layers":[{"id":"type","name":"Type","description":"Body type.","findings":[{"id":"type-finding","name":"Type","description":"Body type.","questions":[{"text":"What type of celestial body is this, according to IAU definitions?","kind":"definition"},{"text":"Has its classification changed?","kind":"provenance"}]}]},{"id":"natural","name":"Natural","description":"Natural or artificial.","findings":[{"id":"natural-finding","name":"Natural","description":"Natural or artificial.","questions":[{"text":"Is the object natural or an artificial satellite or debris?","kind":"boundary"},{"text":"How can it be told apart?","kind":"action"}]}]}]},{"id":"properties","name":"Properties","description":"Data.","layers":[{"id":"data","name":"Data","description":"Physical data.","findings":[{"id":"data-finding","name":"Data","description":"Physical data.","questions":[{"text":"What are the size, mass, orbit and composition of this body, according to catalogues?","kind":"provenance"},{"text":"Which missions have visited or observed it?","kind":"provenance"}]}]},{"id":"position","name":"Position","description":"Where it is.","findings":[{"id":"position-finding","name":"Position","description":"Position.","questions":[{"text":"Where is the body in the sky now?","kind":"measurement"},{"text":"When is it best observed?","kind":"measurement"}]}]}]},{"id":"observe","name":"Observe","description":"Viewing.","layers":[{"id":"equipment","name":"Equipment","description":"What is needed.","findings":[{"id":"equipment-finding","name":"Equipment","description":"Equipment.","questions":[{"text":"Can this body be seen with the naked eye, binoculars or a telescope?","kind":"boundary"},{"text":"Which magnification helps?","kind":"measurement"}]}]},{"id":"safety","name":"Safety","description":"Solar observing.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety.","questions":[{"text":"Is the Sun involved, requiring proper solar filters?","kind":"boundary"},{"text":"Which safe methods apply?","kind":"provenance"}]}]}]},{"id":"law","name":"Law","description":"Space law.","layers":[{"id":"treaty","name":"Treaty","description":"Non-appropriation.","findings":[{"id":"treaty-finding","name":"Treaty","description":"Non-appropriation.","questions":[{"text":"What does the Outer Space Treaty say about ownership of celestial bodies?","kind":"provenance"},{"text":"How do national space resource laws relate?","kind":"provenance"}]}]},{"id":"names","name":"Names","description":"Naming.","findings":[{"id":"names-finding","name":"Names","description":"Naming.","questions":[{"text":"How are celestial bodies officially named?","kind":"provenance"},{"text":"Are commercial star naming services recognised?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["Describe celestial bodies from authoritative astronomical catalogues.","Use official names and designations from the naming authority."],"mustNot":["Sell names of stars or other bodies as if they were officially recognized.","Claim ownership of a celestial body or land on it for anyone.","Spread false impact or doomsday claims."],"requiresHuman":["Publishing an impact warning for an object near Earth."]},"ethics":{"considerations":["Space is held in common; no nation or person may appropriate celestial bodies.","False impact warnings cause fear."],"affectedParties":["The public","Astronomers","Buyers of name certificates"]},"owners":{"steward":"Nobody: the outer space treaty excludes national appropriation; the astronomical union names them.","roles":[],"masterSystems":["International Astronomical Union nomenclature","Minor body catalogues"]},"relations":[{"target":"Q6999","type":"parent","note":"registry parent class"},{"target":"astronomical object","type":"related","note":"category"},{"target":"planet","type":"related","note":"kind"},{"target":"telescope","type":"related","note":"instrument"},{"target":"Outer Space Treaty","type":"related","note":"law"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.celestial-body","Wikidata: Q1519541 (https://www.wikidata.org/wiki/Q1519541)"]},"properties":{"applicability":"required","items":["Physical diameter:  kilometres - Estimate diameter from observations and distance measurements while specifying the boundary used for diffuse objects.","Mass:  kilograms - Infer mass from gravitational effects or an explicitly stated physical model.","Distance from the observer:  metres - Determine distance using a method appropriate to the object and record the observation epoch.","Angular diameter:  arcseconds - Measure apparent angular extent using calibrated observations and report an upper limit when the object is unresolved."]},"recognition":{"applicability":"required","items":["Stars, planets, moons and small bodies","Natural objects, not spacecraft","Artificial satellites move across the sky quickly","Points or discs of light in the sky, or extended objects such as nebulae and galaxies."]},"capabilities":{"applicability":"required","items":["classify an object as a type of celestial body","find its properties and position","support observing it","explain space law on celestial bodies"]},"hazards":{"applicability":"required","items":["Confusing satellites and celestial bodies","Outdated classifications","Misstating space law"]},"interfaces":{"applicability":"required","items":["IAU nomenclature and classification","Outer Space Treaty article II on non-appropriation","Moon Agreement"]},"context":{"applicability":"required","items":["Classifying and understanding objects in space.","stars and stellar remnants","planets and dwarf planets","moons","asteroids, comets and other small bodies","nebulae and galaxies (broader astronomical objects)"]}},"sources":[{"title":"Wikidata item Q1519541: celestial body","url":"https://www.wikidata.org/wiki/Q1519541","note":"identity and sense of the item"},{"title":"Wikipedia (de): Gestirn","url":"https://de.wikipedia.org/wiki/Gestirn","note":"general description of the item"}],"openQuestions":["Should each body type be a separate entry?","How should catalogues be linked?","How should space resource law be tracked?"],"resources":{"spec":"/models/things/publications/thing-q1519541/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1519541/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T15:39:38Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{},"score":1.0}}