Property talk:P196

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Documentation

minor planet group
is in grouping of minor planets according to similar orbital characteristics
Description For asteroids/minor-planets, saying which family they are in.
Represents minor-planet group (Q2332332)
Data type Item
Template parameter en:Template:Infobox planet mp_category
Domain
According to this template: asteroids/minor-planets - minor planet (Q1022867)
According to statements in the property:
minor planet (Q1022867) and binary asteroid (Q947662)
When possible, data should only be stored as statements
Allowed values subclasses of minor planet (Q1022867), instances of minor planet group (Q6188101) (note: this should be moved to the property statements)
Example 10 Hygiea (Q2640)asteroid belt (Q2179)
Tracking: usage Category:Pages using Wikidata property P196 (Q26250038)
Lists
Proposal discussion Property proposal/Archive/3#P196
Current uses 91,044
[create] Create a translatable help page (preferably in English) for this property to be included here
Type “minor planet (Q1022867), binary asteroid (Q947662): element must contain property “instance of (P31)” with classes “minor planet (Q1022867), binary asteroid (Q947662)” 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/P196#Type Q1022867, Q947662, SPARQL
Value type “minor planet group (Q6188101), minor planet (Q1022867), asteroid belt (Q2179): This property should use items as value that contain property “subclass of (P279)”. On these, the value for subclass of (P279) should be an item that uses subclass of (P279) with value minor planet group (Q6188101), minor planet (Q1022867), asteroid belt (Q2179) (or a subclass thereof).
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P196#Value type Q6188101, Q1022867, Q2179, SPARQL



Hierarchy[edit]

This property should use items member of a hierarchy of the property subclass of (P279) starting from the item minor planet group (Q6188101).

Check the hierarchy[edit]

Item Property Expected value Found value
Vulcanoid asteroid subclass of minor planet group [[minor planet group]]
[[hypothetical astronomical object]]
X mark.svg
near-Earth asteroid subclass of minor planet group [[asteroid]]
[[near-Earth object]]
X mark.svg
asteroid belt subclass of minor planet group P279 does not found X mark.svg
planet-crossing minor planets subclass of minor planet group [[minor planet group]] X mark.svg
trojan subclass of minor planet group [[minor planet group]]
[[co-orbital object]]
X mark.svg
distant minor planet subclass of minor planet group [[minor planet]] X mark.svg
Apollo asteroids subclass of near-Earth asteroid [[near-Earth asteroid]]
[[minor planet group]]
X mark.svg
Aten asteroid subclass of near-Earth asteroid [[near-Earth asteroid]]
[[minor planet group]]
X mark.svg
Apohele asteroid subclass of Aten asteroid [[Aten asteroid]] X mark.svg
Amor asteroids subclass of near-Earth asteroid [[near-Earth asteroid]]
[[minor planet group]]
X mark.svg
List of Mercury-crossing minor planets subclass of planet-crossing minor planets [[planet-crossing minor planets]] X mark.svg
List of Venus-crossing minor planets subclass of planet-crossing minor planets [[planet-crossing minor planets]] X mark.svg
Earth-crosser asteroid subclass of planet-crossing minor planets [[planet-crossing minor planets]] X mark.svg
list of Mars-crossing minor planets subclass of planet-crossing minor planets [[planet-crossing minor planets]] X mark.svg
List of Jupiter-crossing minor planets subclass of planet-crossing minor planets [[planet-crossing minor planets]] X mark.svg
List of Saturn-crossing minor planets subclass of planet-crossing minor planets [[planet-crossing minor planets]] X mark.svg
List of Uranus-crossing minor planets subclass of planet-crossing minor planets [[planet-crossing minor planets]] X mark.svg
List of Neptune-crossing minor planets subclass of planet-crossing minor planets [[planet-crossing minor planets]] X mark.svg
Earth trojan subclass of trojan [[trojan asteroid]] X mark.svg
Mars trojan subclass of trojan [[trojan asteroid]] X mark.svg
Jupiter trojan subclass of trojan [[trojan asteroid]] X mark.svg
Neptune trojan subclass of trojan [[trojan asteroid]]
[[cis-Neptunian object]]
X mark.svg
cis-Neptunian object subclass of distant minor planet [[distant minor planet]] X mark.svg
trans-Neptunian object subclass of distant minor planet [[distant minor planet]]
[[minor planet group]]
X mark.svg
plutoid subclass of trans-Neptunian object [[dwarf planet]]
[[trans-Neptunian object]]
X mark.svg
Kuiper belt subclass of trans-Neptunian object P279 does not found X mark.svg
scattered disc subclass of trans-Neptunian object P279 does not found X mark.svg
detached object subclass of trans-Neptunian object [[trans-Neptunian object]] X mark.svg
Oort cloud subclass of trans-Neptunian object [[trans-Neptunian object]] X mark.svg
classical Kuiper belt object subclass of Kuiper belt [[Kuiper belt object]] X mark.svg
resonant trans-Neptunian object subclass of Kuiper belt [[trans-Neptunian object]] X mark.svg
plutino subclass of resonant trans-Neptunian object [[resonant trans-Neptunian object]] X mark.svg
twotino subclass of resonant trans-Neptunian object [[resonant trans-Neptunian object]] X mark.svg


Subclass constraint[edit]

This property has a constraint requiring that values be subclasses of minor planet group (Q6188101). Does this make any sense? Looking at the hierarchy above, there are some very strange implications. For example, an accepted value is distant minor planet (Q5282923). distant minor planet (Q5282923) is listed as though it should be a subclass of minor planet group (Q6188101), which would imply that every instance of distant minor planet (Q5282923) would also be an instance of minor planet group (Q6188101) by extension, but distant minor planets are not each minor planet groups. (Currently, the item is listed as being a subclass of minor planet (Q1022867) instead, which seems much more correct.)

Perhaps the constraint should be either requiring instance of (P31) minor planet group (Q6188101), or subclass of (P279) minor planet (Q1022867), instead? --Yair rand (talk) 16:03, 29 November 2015 (UTC)