{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.planetary-mass-object","code":"thing-q400144","url":"https://ver.cy/models/thing/q400144/","name":"planetary-mass object","alternateNames":[],"kind":"thing","status":"research-draft","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"","entryKind":"","plane":"","domain":["PHY.SPC"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A celestial body massive enough to have become nearly round under its own gravity but not massive enough to sustain nuclear fusion; includes planets, dwarf planets, large moons and free-floating planetary-mass objects.","purpose":"Let an agent handle planetary-mass objects as a geophysical class spanning planets, dwarf planets and large moons, with sourced data.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Round from self-gravity","No fusion","Cuts across orbital classes","Includes free-floating objects"],"structure":{"bundles":[{"id":"classification","name":"Classification","description":"Which body.","layers":[{"id":"criteria","name":"Criteria","description":"Shape and mass.","findings":[{"id":"criteria-finding","name":"Criteria","description":"Criteria.","questions":[{"text":"Is the body in hydrostatic equilibrium?","kind":"boundary"},{"text":"How was that determined?","kind":"provenance"}]}]},{"id":"orbit","name":"Orbit","description":"Planet, moon or rogue.","findings":[{"id":"orbit-finding","name":"Orbit","description":"Orbital class.","questions":[{"text":"What does it orbit, if anything?","kind":"definition"},{"text":"Which IAU class applies?","kind":"provenance"}]}]}]},{"id":"properties","name":"Properties","description":"Measurements.","layers":[{"id":"mass","name":"Mass and size","description":"Values.","findings":[{"id":"mass-finding","name":"Mass","description":"Mass and radius.","questions":[{"text":"What are its mass and radius?","kind":"measurement"},{"text":"From which mission or study?","kind":"provenance"}]}]},{"id":"composition","name":"Composition","description":"Rock, ice, gas.","findings":[{"id":"composition-finding","name":"Composition","description":"Composition.","questions":[{"text":"What is it made of?","kind":"measurement"},{"text":"How certain is that?","kind":"boundary"}]}]}]},{"id":"rogues","name":"Rogue planets","description":"Free-floating.","layers":[{"id":"detection","name":"Detection","description":"Methods.","findings":[{"id":"detection-finding","name":"Detection","description":"Detection.","questions":[{"text":"How are free-floating planets detected?","kind":"definition"},{"text":"How many are known?","kind":"measurement"}]}]},{"id":"boundary","name":"Boundary","description":"Brown dwarfs.","findings":[{"id":"boundary-finding","name":"Boundary","description":"Mass boundary.","questions":[{"text":"Is it below the brown dwarf limit?","kind":"boundary"},{"text":"How is the limit defined?","kind":"definition"}]}]}]},{"id":"debate","name":"Debate","description":"Definitions.","layers":[{"id":"views","name":"Views","description":"Geophysical vs IAU.","findings":[{"id":"views-finding","name":"Views","description":"Definitional views.","questions":[{"text":"How do geophysical and IAU definitions differ?","kind":"definition"},{"text":"Who argues for each?","kind":"provenance"}]}]},{"id":"communication","name":"Communication","description":"Clarity.","findings":[{"id":"communication-finding","name":"Communication","description":"Clear explanation.","questions":[{"text":"How can the class be explained simply?","kind":"action"},{"text":"Which confusions are common?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["classify bodies by shape and mass","compare planets, moons and dwarf planets","study rogue planets","follow classification debates"],"mustNot":[],"requiresHuman":[]},"ethics":{"considerations":[],"affectedParties":[]},"owners":{"steward":"","roles":[],"masterSystems":[]},"relations":[{"target":"planet, dwarf planet","type":"related","note":"members"},{"target":"brown dwarf and star","type":"related","note":"fusing bodies"},{"target":"planetary science","type":"related","note":"field"},{"target":"planetary body","type":"related","note":"category"}],"interaction":{"identity":{"applicability":"required","items":[]},"properties":{"applicability":"required","items":["lower mass limit: enough for hydrostatic equilibrium mass - depends on composition","upper mass limit: about 13 Jupiter masses - deuterium fusion threshold"]},"recognition":{"applicability":"required","items":["Nearly round shape","Includes moons such as Titan","Brown dwarfs are more massive","Round worlds of rock, ice or gas."]},"capabilities":{"applicability":"required","items":["classify bodies by shape and mass","compare planets, moons and dwarf planets","study rogue planets","follow classification debates"]},"hazards":{"applicability":"required","items":["Mixing geophysical and IAU definitions","Overstating shape data for distant bodies"]},"interfaces":{"applicability":"required","items":["IAU definitions (orbital); geophysical usage varies"]},"context":{"applicability":"required","items":["A physical classification used in planetary science.","planets","dwarf planets","planetary-mass moons","free-floating (rogue) planets"]}},"sources":[],"openQuestions":["Should rogue planets be a separate entry?","How should shape measurements be linked?","How should definitions be compared?","How can the class be explained simply?"],"resources":{"spec":"/models/things/publications/thing-q400144/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q400144/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T07:27:59Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"derived","ethics":"missing","owners":"missing","relations":"filled","interaction.identity":"missing","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"missing"},"notes":{"agentConduct":"Affordances listed as what may be done; prohibitions collected from the text.","sources":"Written from model knowledge without web access; claims are unverified."},"score":0.735}}