Property talk:P620

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UTC date of spacecraft landing
date of spacecraft landing in UTC

Description	landing date (in UTC)
Represents	landing (Q844947)
Data type	Point in time
Template parameter	ru:Шаблон:Космический аппарат, ru:Шаблон:Космическая экспедиция Дата посадки en:Template:Infobox spacecraft return
Domain	According to this template: spacecraft, landers and similar - vehicle (Q42889) According to statements in the property: vehicle (Q42889), spacecraft (Q40218), spaceflight (Q5916), payload (Q21211206) or scientific instrument (Q3099911) When possible, data should only be stored as statements
Allowed values	According to this template: a date, 1957 or after According to statements in the property: 4 October 1957 ≤ 𝓧 ≤ unknown When possible, data should only be stored as statements
Example	According to this template: Soyuz TMA-9 (Q591584) landed 21.04.2007 12:31:30 UTC According to statements in the property: STS-1 (Q217543) → 14 April 1981 Apollo 11 (Q43653) → 24 July 1969 When possible, data should only be stored as statements
Source	NASA site, maps in articles, etc. (note: this information should be moved to a property statement; use property source website for the property (P1896))
Tracking: same	Category:P620 same as Wikidata (Q42533411)
Tracking: usage	Category:Pages using Wikidata property P620 (Q26905106)
See also	UTC date of spacecraft launch (P619)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Items with deprecated claims Usage history (total) Usage history (main statement) Chart by item creation date Future dates Dates in Gregorian calendar before 1582 Dates before year 1 (Help:Dates#Years BC) Date on January 1 (Help:Dates#January 1 as date) Database reports/Complex constraint violations/P620 Database reports/Constraint violations/P620 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 579 Main statement 572 98.8% of uses Qualifier 5 0.9% of uses Reference 2 0.3% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Range from “+1957-10-04T00:00:00Z” to “now”: values should be in the range from “+1957-10-04T00:00:00Z” to “now”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P620#Range

Type “vehicle (Q42889), spacecraft (Q40218), spaceflight (Q5916), payload (Q21211206), scientific instrument (Q3099911)”: item must contain property “instance of (P31)” with classes “vehicle (Q42889), spacecraft (Q40218), spaceflight (Q5916), payload (Q21211206), scientific instrument (Q3099911)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P620#Type Q42889, Q40218, Q5916, Q21211206, Q3099911, SPARQL

Item “location of landing (P1158)”: Items with this property should also have “location of landing (P1158)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P620#Item P1158, search, SPARQL

Item “space launch vehicle (P375)”: Items with this property should also have “space launch vehicle (P375)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P620#Item P375, search, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P620#Entity types

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P620#Scope, SPARQL

This property is being used by:

• ru:Шаблон:Космическая экспедиция
• it:Template:Infobox missione spaziale, it:Template:Missione spaziale
• ro:Format:Infocaseta Misiune spațială
• hy:Կաղապար:Տիեզերական գիտարշավ
• cs:Šablona:Infobox - kosmické těleso
• es:Plantilla:Ficha de misión espacial, es:Plantilla:Ficha de astronáutica, es:Plantilla:Ficha de astronáutica/zona de pruebas, es:Plantilla:Evento

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

Claims without source
Each P620 claim needs to have at least one source (Help)
Violations query: SELECT ?item { ?item p:P620 ?claim. OPTIONAL { ?claim prov:wasDerivedFrom ?source . ?source ?p ?v . } FILTER(!bound(?source)) }
List of this constraint violations: Database reports/Complex constraint violations/P620#Claims without source

Splashdown

Arlo Barnes Athulvis Buller1 cdo256 Cekli829 Harlock81 Jc3s5h JenlovesbigD J. N. Squire Jura1 Kepler-1229b LiMr Manlleus AyberkKZ Meodudlye, with only limited amount of time to spend in the foreseable future. Mike Peel mu301 (mikeu) Paperoastro Path slopu Ptolusque Romuald 2 Sarilho1 Shisma Simon Villeneuve SM5POR JerryAkpan5001 Tom.Reding VIGNERON Wallacegromit1 - generally like to add ground and space observatory instrument data Ysogo Jck1337 Phantomdj Tangjai1234 روتانا

Notified participants of WikiProject Astronomy Which is the correct qualifier to indicate, here and in location of landing (P1158), that a landing is in fact a splashdown (Q1642255)? I tried object of statement has role (P3831) in Apollo 7 (Q188486) (see Q188486#P620 and Q188486#P1158), but better alternatives may be available. Thanks, --Epìdosis 14:17, 1 February 2023 (UTC)

@Epìdosis, I would recommend has characteristic (P1552)splashdown (Q1642255). That said, if location of landing (P1158) is provided, then qualifying either statement with splashdown (Q1642255) seems redundant. It will be clear enough. — Huntster (t @ c) 20:48, 1 February 2023 (UTC)

Should the value account for delay due to long-distance communication?

For example, Perseverance (Q87749354)UTC date of spacecraft landing (P620)18 February 2021refine date (P4241)20:55 (Q55812711), but in the cited article it clearly says "Confirmation of the successful touchdown was announced in mission control [...] 12:55 p.m. PST," implying that was the moment the telemetry/video feeds were received at the JPL and the actual touchdown was about 11 minutes earlier. enwiki says something to that effect. YoshiRulz (talk) 09:59, 20 December 2025 (UTC)

@YoshiRulz: The time given in the item is UTC. Nevermind, I misunderstood. It's a good point. I found https://dataverse.jpl.nasa.gov/file.xhtml?fileId=65142&version=3.0 which clearly gives the reconstructed time as 20:43:49 SCET. I'll change the item to reflect that. — Huntster (t @ c) 16:16, 20 December 2025 (UTC)

Spacecraft Event Time (Q7572660) seems like the perfect solution, thank you. YoshiRulz (talk) 01:54, 21 December 2025 (UTC)