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(P399)
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English
companion of
two or more astronomic bodies of the same type relating to each other
In more languages
Data type
Item
Statements
instance of
Wikidata property for items about astronomical objects
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Wikidata property example
NGC 869
companion of
NGC 884
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Delta Cephei
companion of
HD 213307
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inverse property
companion of
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category for value same as Wikidata
Q42533433
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related property
sidekick of
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property proposal discussion
https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/4#P399
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Constraints
property constraint
subject type constraint
class
astronomical object
relation
instance of
constraint status
mandatory constraint
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value-type constraint
class
astronomical object
relation
instance of
constraint status
mandatory constraint
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symmetric constraint
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property scope constraint
constraint status
mandatory constraint
property scope
as main value
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allowed-entity-types constraint
item of property constraint
Wikibase item
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