{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.evening-star","code":"thing-q319013","url":"https://ver.cy/models/thing/q319013/","name":"evening star","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.2","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 bright planet, usually Venus and sometimes Mercury, seen in the western sky after sunset, called the evening star in many cultures, with the same planet appearing as the morning star before sunrise at other times of its orbit; the term is cultural and observational rather than a class of star.","purpose":"Let an agent explain what the evening star is, tell when Venus or Mercury is visible in the evening, and describe cultural names and meanings with attribution.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["A planet, not a star","Evening apparition","Usually Venus","Cultural name"],"structure":{"bundles":[{"id":"see","name":"See","description":"Spotting it.","layers":[{"id":"when","name":"When","description":"Current visibility.","findings":[{"id":"when-finding","name":"When","description":"Visibility.","questions":[{"text":"Is Venus or Mercury currently visible as an evening star from this location, according to an ephemeris?","kind":"provenance"},{"text":"Where and when should the observer look?","kind":"action"}]}]},{"id":"identify","name":"Identify","description":"Is it the evening star.","findings":[{"id":"identify-finding","name":"Identify","description":"Identification.","questions":[{"text":"Is the bright object seen in the west a planet, a star, an aircraft or a satellite?","kind":"boundary"},{"text":"How can it be confirmed?","kind":"action"}]}]}]},{"id":"science","name":"Science","description":"Why it appears.","layers":[{"id":"orbit","name":"Orbit","description":"Inner planet apparitions.","findings":[{"id":"orbit-finding","name":"Orbit","description":"Orbits.","questions":[{"text":"Why do Venus and Mercury alternate between evening and morning visibility?","kind":"definition"},{"text":"What is greatest elongation?","kind":"definition"}]}]},{"id":"phases","name":"Phases","description":"Phases and brightness.","findings":[{"id":"phases-finding","name":"Phases","description":"Phases.","questions":[{"text":"Why does Venus show phases and vary in brightness?","kind":"definition"},{"text":"What can a small telescope show?","kind":"provenance"}]}]}]},{"id":"culture","name":"Culture","description":"Names and myths.","layers":[{"id":"names","name":"Names","description":"Cultural names.","findings":[{"id":"names-finding","name":"Names","description":"Names.","questions":[{"text":"What names have cultures given the evening star, and when was it realised to be the same object as the morning star?","kind":"provenance"},{"text":"Which deities are linked to it?","kind":"provenance"}]}]},{"id":"literature","name":"Literature","description":"In literature.","findings":[{"id":"literature-finding","name":"Literature","description":"Literature.","questions":[{"text":"How is the evening star used in poetry and song?","kind":"provenance"},{"text":"Which examples are notable?","kind":"provenance"}]}]}]},{"id":"learn","name":"Learn","description":"Teaching.","layers":[{"id":"teach","name":"Teach","description":"Teaching.","findings":[{"id":"teach-finding","name":"Teach","description":"Teaching.","questions":[{"text":"How can the evening star be used to teach planetary motion?","kind":"action"},{"text":"Which misconceptions arise?","kind":"provenance"}]}]},{"id":"photo","name":"Photo","description":"Photographing.","findings":[{"id":"photo-finding","name":"Photo","description":"Photography.","questions":[{"text":"How can the evening star be photographed at dusk?","kind":"action"},{"text":"Which conjunctions are photogenic?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain that the evening star is a planet, usually Venus, and when it is visible.","Describe its role in the myths and calendars of many cultures."],"mustNot":["Present the evening star as a star rather than a planet.","Present astrological readings of the evening star as predictions.","Mock the cultural and religious meanings attached to it."],"requiresHuman":["Publishing interpretations of its meaning in a living religious tradition."]},"ethics":{"considerations":["The evening star carries religious and cultural meaning for many peoples.","Public understanding of astronomy depends on clear explanations."],"affectedParties":["Learners","Cultural and religious communities"]},"owners":{"steward":"Nobody: a planet seen from Earth, held in common.","roles":[],"masterSystems":[]},"relations":[{"target":"Q133846117","type":"parent","note":"registry parent class"},{"target":"planet","type":"related","note":"category"},{"target":"Venus","type":"related","note":"usual identity"},{"target":"Mercury","type":"related","note":"sometimes"},{"target":"sky","type":"related","note":"where it is seen"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.evening-star","Wikidata: Q319013 (https://www.wikidata.org/wiki/Q319013)"]},"properties":{"applicability":"required","items":["Apparent visual magnitude:  Magnitude - Brightness is measured photometrically and varies with the planet, its phase and its distance from Earth.","Angular separation from the Sun:  Degrees - Elongation is measured between the apparent positions of the planet and the Sun in the sky.","Apparent angular diameter:  Arcseconds - The angular width of the planetary disk is measured telescopically and varies with distance from Earth."]},"recognition":{"applicability":"required","items":["Bright, does not twinkle much","Low in the west after sunset","Sirius is a true star and rises elsewhere","A very bright, steady point of light in the west after sunset."]},"capabilities":{"applicability":"required","items":["explain which planet is the evening star","give current evening visibility with sources","describe cultural names and mythology","distinguish from stars and other objects"]},"hazards":{"applicability":"required","items":["Calling it a star","Mistaking aircraft or satellites","Confusing morning and evening apparitions"]},"interfaces":{"applicability":"required","items":["No regulation; astronomical ephemerides"]},"context":{"applicability":"required","items":["Naked-eye astronomy and culture.","Venus as evening star","Mercury as evening star","morning star apparitions","mythological figures named for the evening star"]}},"sources":[{"title":"Wikidata item Q319013: evening star","url":"https://www.wikidata.org/wiki/Q319013","note":"identity and sense of the item"},{"title":"Wikipedia (de): Abendstern","url":"https://de.wikipedia.org/wiki/Abendstern","note":"general description of the item"}],"openQuestions":["Should the morning star be a separate entry?","How should ephemeris data be linked?","How should mythology be attributed?"],"resources":{"spec":"/models/things/publications/thing-q319013/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q319013/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T21:12:39Z","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":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-08T19:09:53+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}