Property talk:P575

Active discussions


time of discovery or invention
date or point in time when the item was discovered or invented
Descriptionwhen the item was discovered
Representsinvention (Q14208553), discovery (Q12772819)
Data typePoint in time
Template parametere.g. Infobox planet discovered, Infobox particle discovered, Infobox element discovery date, Infobox diamond found, Infobox fossil date discovered
Domainall item that was discovered (e.g. astronomic objects, inventions, archaeological sites, animal/plant species...) (note: this should be moved to the property statements)
Allowed values77986 ≤ 𝓧 ≤ unknown
ExampleUranus (Q324)
Bathurst Island (Q217369)
no label (Q403546)
M82589933 (Q67171811)
Tracking: sameno label (Q42533402)
Tracking: usageCategory:Pages using Wikidata property P575 (Q21037783)
See alsostart time (P580), discoverer or inventor (P61), time of earliest written record (P1249)
Proposal discussionProposal discussion
Current uses
Main statement75,47298.7% of uses
Qualifier9891.3% of uses
Reference3<0.1% of uses
[create Create a translatable help page (preferably in English) for this property to be included here]
Range from “-77986-00-00T00:00:00Z” to “now”: values should be in the range from “-77986-00-00T00:00:00Z” to “now”. (Help)
Exceptions are possible as rare values may exist. Known exceptions: Omega molecule (Q61041102)
List of this constraint violations: Database reports/Constraint violations/P575#Range, SPARQL (new)
  P575 < P570
Violations query: SELECT ?item ?died ?discovered { ?item wdt:P575 ?discovered. ?item wdt:P570 ?died. FILTER (?discovered < ?died) }
List of this constraint violations: Database reports/Complex constraint violations/P575#P575 < P570
  Discovered date after died date
False positive cases exists (Help)
Violations query: SELECT ?item ?discovered ?died ?diff ?nb ?person { ?item wdt:P575 ?discovered; wikibase:statements ?nb. ?item wdt:P61 ?person. ?person wdt:P570 ?died. BIND (?died - ?discovered AS ?diff) FILTER (?discovered > ?died) FILTER (?item NOT IN (wd:Q1434934, wd:Q1537693, wd:Q1156887, wd:Q64547993, wd:Q1628151, wd:Q871, wd:Q1143156, wd:Q29592913, wd:Q2116298, wd:Q11035, wd:Q10422)) } ORDER BY ?diff
List of this constraint violations: Database reports/Complex constraint violations/P575#Discovered date after died date
This property is being used by:

Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)


It should be "when the item was discovered or invented", as for discoverer or inventor (P61). --Gloumouth1 (talk) 07:50, 10 December 2013 (UTC)

  Support --Gloumouth1
  Support 1) for your consideration of P31; 2) I don't found any property for "invented" date. --Paperoastro (talk) 08:08, 10 December 2013 (UTC)
  Support - Soulkeeper (talk) 16:24, 18 August 2017 (UTC)

Formatting the date valueEdit

Hello, I have been working on an semi-automated template for asteroids here, but when I call this Property I get the date in English. I can't get the date correctly formatted in basque language. Does anyone know how to make it? -Theklan (talk) 12:10, 30 October 2015 (UTC)

Same as ? --- Jura 15:51, 30 October 2015 (UTC)
Yes, it could be. -Theklan (talk) 17:19, 30 October 2015 (UTC)

Rethinking this propertyEdit

(Possibly relevant statistics: This property is used on 51265 pages. All but 1205 also have discoverer or inventor (P61).)

Things can be discovered multiple times, by multiple people. However, we currently have no way of linking the separate time of discovery or invention (P575) and discoverer or inventor (P61) statements to each other, leaving ambiguous when any particular discoverer's discovery took place. There are a few ways this could be remedied:

  • P575 could be deleted, and replaced with point in time (P585) as a qualifier of discoverer or inventor (P61). Problems: This makes it impossible to add the time without the discoverer, and also doesn't work well for discoveries by groups of people.
  • P61 could be deleted, and replaced by a new property that would qualify P575 to show the discoverer. Problem: This makes it impossible to show the discoverer without the time.
  • Either P575 or P61 could be changed to also be usable as a qualifier in particular cases where there were multiple discoveries, so as to link the data points. Problem: Introduces inconsistency in the data model, harder to query things.
  • If something is discovered multiple times, all but the first could be ignored. Problem: Leaving out potentially useful data.

Thoughts? --Yair rand (talk) 08:55, 23 December 2015 (UTC)

@Yair rand: you are wrong in 1 and 2, because we can set "unknown value" and "no value"
I think it would make more sense to use some property + qualifier.
Claims at hydroponics (Q191667) are not "connected" to each other
I prefer to have dates as qualifiers. d1g (talk) 13:24, 27 September 2017 (UTC)

not for "invented"?Edit

d1g (talk) 13:13, 27 September 2017 (UTC)

@D1gggg: See #Description. --Yair rand (talk) 00:50, 28 September 2017 (UTC)

Time of invention vs. time of publicationEdit

Q8021247 was designed and built in 1944, but made public in April 1947. Is there a way to state both (which qualifiers?) or which one should prevail? Retired electrician (talk) 11:32, 10 February 2018 (UTC)

Return to "P575" page.