| Wikidata property for items about astronomical objects | Q21451142 |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/4#P399 |
| P3734 | category for value same as Wikidata | ??? | Q42533433 |
| P1696 | inverse property | companion of | P399 |
| P2302 | property constraint | allowed-entity-types constraint | Q52004125 |
| property scope constraint | Q53869507 | ||
| symmetric constraint | Q21510862 | ||
| value-type constraint | Q21510865 | ||
| subject type constraint | Q21503250 | ||
| P1659 | related property | sidekick of | P2546 |
| P399 | companion of | inverse property | P1696 |
| Q6999 | astronomical object | properties for this type | P1963 |
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