Property talk:P2244

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Documentation

periapsis
distance, at which a celestial body is the closest to the object it orbits
Represents periapsis (Q1088950)
Data type Quantity
Domain
According to statements in the property:
astronomical object type (Q17444909), planetary system (Q206717) and astronomical body (Q6999)
When possible, data should only be stored as statements
Example Earth (Q2) → 147,095,000 kilometre
Tracking: usage Category:Pages using Wikidata property P2244 (Q26250049)
See also apoapsis (P2243)
Lists
Proposal discussion Property proposal/Archive/37#P2244
Current uses 1,375
[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.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P2244#Units
Type “astronomical object type (Q17444909), planetary system (Q206717), astronomical body (Q6999): element must contain property “instance of (P31)” with classes “astronomical object type (Q17444909), planetary system (Q206717), astronomical body (Q6999)” or their subclasses (defined using subclass of (P279)).
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P2244#type Q17444909, Q206717, Q6999, SPARQL
Single value: this property generally contains a single value.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P2244#single value, SPARQL
Qualifiers “relative to (P2210): this property should be used only with the listed qualifiers.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P2244#Allowed qualifiers, SPARQL
Item “parent astronomical body (P397): Items with this property should also have “parent astronomical body (P397)”.
Exceptions are possible as rare values may exist. Known exceptions: 4 Vesta (Q3030)
List of this constraint violations: Database reports/Constraint violations/P2244#Item P397, SPARQL
Item “orbital eccentricity (P1096): Items with this property should also have “orbital eccentricity (P1096)”.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P2244#Item P1096, SPARQL
Item “semi-major axis (P2233): Items with this property should also have “semi-major axis (P2233)”.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P2244#Item P2233, SPARQL
Item “apoapsis (P2243): Items with this property should also have “apoapsis (P2243)”.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P2244#Item P2243, SPARQL

Constraints P2243 and P2233[edit]

Comets like Comet Lulin (Q477976) should not have properties like apoapsis (P2243) and semi-major axis (P2233) (or they should be "novalue"). But I guess it is better to make exceptions for them, than removing these Constraints. -- Innocent bystander (talk) 11:49, 20 October 2015 (UTC)