Property talk:P2243

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apoapsis
distance, at which a celestial body is the farthest to the object it orbits

Represents	apoapsis distance (Q98875099)
Data type	Quantity
Domain	According to this template: astronomical object type (Q17444909),planetary system (Q206717), astronomical object (Q6999) According to statements in the property: astronomical object type (Q17444909), planetary system (Q206717), astronomical object (Q6999), spaceflight (Q5916), fictional astronomical object (Q15831598) or spacecraft (Q40218) When possible, data should only be stored as statements
Allowed units	kilometre (Q828224) or astronomical unit (Q1811)
Example	Earth (Q2) → 151,930,000 kilometre 1I/ʻOumuamua (Q42313338) → not applicable
Tracking: usage	Category:Pages using Wikidata property P2243 (Q26905049)
<complementary property>	periapsis (P2244)
See also	semi-major axis of an orbit (P2233)
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 Usage history (total) Usage history (main statement) Chart by item creation date Minimum and maximum Items with highest numeric value Items with lowest numeric value User:Laboramus/Units/P2243 (Units used) Database reports/Constraint violations/P2243 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 89,559 Main statement 89,533 >99.9% of uses Qualifier 26 <0.1% of uses

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

Units: “kilometre (Q828224), astronomical unit (Q1811)”: value unit must be one of listed. (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/P2243#Units

Type “astronomical object type (Q17444909), planetary system (Q206717), astronomical object (Q6999), spaceflight (Q5916), fictional astronomical object (Q15831598), spacecraft (Q40218)”: item must contain property “instance of (P31)” with classes “astronomical object type (Q17444909), planetary system (Q206717), astronomical object (Q6999), spaceflight (Q5916), fictional astronomical object (Q15831598), spacecraft (Q40218)” 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/P2243#Type Q17444909, Q206717, Q6999, Q5916, Q15831598, Q40218, SPARQL

Qualifiers “relative to (P2210), reason for deprecated rank (P2241), reason for preferred rank (P7452), point in time (P585), start time (P580), end time (P582), epoch (P6259)”: this property should be used only with the listed qualifiers. (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/P2243#allowed qualifiers, SPARQL

Item “parent astronomical body (P397)”: Items with this property should also have “parent astronomical body (P397)”. (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/P2243#Item P397, SPARQL

Item “orbital eccentricity (P1096)”: Items with this property should also have “orbital eccentricity (P1096)”. (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/P2243#Item P1096, SPARQL

Item “periapsis (P2244)”: Items with this property should also have “periapsis (P2244)”. (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/P2243#Item P2244, 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/P2243#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/P2243#Scope, SPARQL

This property is being used by: it:Template:Infobox missione spaziale, it:Template:Missione spaziale no:Mal:Infoboks småplanet el:Πρότυπο:Κουτί πληροφοριών πλανήτη, el:Πρότυπο:Πληροφορίες πλανήτη ca:Plantilla:Asteroide, ca:Plantilla:Infotaula d'asteroide, ca:Plantilla:Infotaula vol espacial, ca:Plantilla:Infotaula vol espacial/prova, ca:Plantilla:Infotaula vehicle espacial/prova he:תבנית:אסטרואיד hy:Կաղապար:Տիեզերական գիտարշավ ro:Format:Infocaseta Planetă la:Formula:Capsa asteroidis Vicidata, la:Formula:Capsa satellitis Vicidata pt:Predefinição:Info/Asteroide, pt:Predefinição:Info/Asteroide/Testes be:Шаблон:Малая планета ast:Plantía:Ficha d'oxetu celeste eu:Txantiloi:Astronomia infotaula vec:Modèl:Corpo celeste, vec:Modèl:Infobox de Ojeto astronòmego, vec:Modeło:Infobox de Ojeto astronòmego, vec:Modeło:Infobox de Voło spasiałe cs:Šablona:Infobox - kosmické těleso es:Plantilla:Ficha de misión espacial, es:Plantilla:Ficha de astronáutica, es:Plantilla:Ficha de astronáutica/zona de pruebas be-x-old:Шаблён:Плянэта ha:Template:Infobox astronomical object incubator:Template:Wp/shi/Infobox astronomical object kab:Talɣa:Infobox astronomical object zh-yue:Template:維基數據行星明細 az:Şablon:Planet 2, az:Şablon:Planet shi:Talɣa:Infobox astronomical object ga:Teimpléad:WD Bosca Sonraí Taisteal Spáis ary:موضيل:معلومات جرم سماوي, ary:موضيل:معلومات قمر, ary:موضيل:معلومات كوكب, ary:موضيل:معلومات كوكب خارجي, ary:موضيل:معلومات نيزك hu:Sablon:Égitest infobox be-tarask:Шаблён:Плянэта eo:Ŝablono:Informkesto astronomia objekto yue:Template:維基數據行星明細 gv:Clowan:WD Kishtey Fys Arraghey Spoar uk:Шаблон:Комета Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

More general

@Tobias1984, Sjoerddebruin, Mbch331, Pikolas: This property looks too solarsentric. It's not useful for any moon, articifical satellite, or anything orbiting anything but the sun. Apoapsis looks to me like a more general property. This property is young, it is not to late to change. There are maybe some examples of objects where it is not obvious what it is related to, like objects in the Pluto-Charon system and other objects in binary/trinary systems. For those we can use properties like relative to (P2210) as a qualifier. -- Innocent bystander (talk) 15:22, 18 October 2015 (UTC)

This was proposed by Yair rand and nobody suggested it on the proposal page. I don't see any problems in changing it. Mbch331 (talk) 15:59, 18 October 2015 (UTC)

@Innocent bystander: Good idea. Aphelion can still be an alias. Can you also review the other properties on Wikidata:Property proposal/Space. --Tobias1984 (talk) 16:27, 18 October 2015 (UTC)

Please also review my proposal of "Periapsis_date". I am not fully pleased with the "significant event"-solution. -- Innocent bystander (talk) 20:11, 18 October 2015 (UTC)

Parent astronomical body

I don't think it should be needed to add the parent astronomical body (P397) property, at least when we talk about man made satellites. Since doing that requires to add the child astronomical body (P398) property to Earth (Q2), I found it rather impractical since we would need to that to 4000 satellites that are currently orbiting the Earth.--BugWarp (talk) 19:31, 24 November 2019 (UTC)

Change of orbits / Unicity

This property is meant to have a unique value. But then how can we document the changes of orbit? This is now mandatory that artifical satellites get their orbit changed at their end of life to minimize the risk of new space debris. I tried to document the deorbitation of Q3459966 and faced the unicity warning. --Don-vip (talk) 21:43, 4 April 2021 (UTC)

@Don-vip: I adjusted the unicity constraint to allow several values (as long as they have qualifiers to distinguish them) : Special:Diff/1396290560. I think it's good now. Notifying

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

Notified participants of WikiProject Astronomy. Cheers, VIGNERON (talk) 11:24, 5 April 2021 (UTC)

We can also add a qualifier with the date of when the orbit has certain value of apoapsid. --Paperoastro (talk) 14:21, 5 April 2021 (UTC)

Note that there may be several different values for astronomical objects due to different measurements over the years. I'm not sure that a unique value constraint is appropriate here. Thanks. Mike Peel (talk) 18:52, 10 April 2021 (UTC)