Arp 2
E117418
Arp 2 is a globular star cluster located in the Sagittarius constellation and is considered part of the Sagittarius Dwarf Spheroidal Galaxy system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Arp 2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T992649 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Arp 2 Context triple: [Sagittarius Dwarf Spheroidal Galaxy, associatedGlobularCluster, Arp 2]
-
A.
APRIN
APRIN is a Japanese organization focused on promoting research integrity and ethical conduct in academic and scientific communities.
-
B.
APRU
APRU (Association of Pacific Rim Universities) is a consortium of leading research universities around the Pacific Rim that collaborates on education, research, and policy initiatives.
-
C.
ARO
ARO is the U.S. Army Research Office, a primary Army organization that funds and manages basic scientific research to support future military technologies and capabilities.
-
D.
ARL
ARL (Australian Rugby League) was the top-level rugby league competition in Australia during the mid-1990s, preceding the formation of the National Rugby League (NRL).
-
E.
Ap
Ap is the commonly used abbreviation for the Norwegian Labour Party, a major social-democratic political party in Norway.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Arp 2 Target entity description: Arp 2 is a globular star cluster located in the Sagittarius constellation and is considered part of the Sagittarius Dwarf Spheroidal Galaxy system.
-
A.
APRIN
APRIN is a Japanese organization focused on promoting research integrity and ethical conduct in academic and scientific communities.
-
B.
APRU
APRU (Association of Pacific Rim Universities) is a consortium of leading research universities around the Pacific Rim that collaborates on education, research, and policy initiatives.
-
C.
ARO
ARO is the U.S. Army Research Office, a primary Army organization that funds and manages basic scientific research to support future military technologies and capabilities.
-
D.
ARL
ARL (Australian Rugby League) was the top-level rugby league competition in Australia during the mid-1990s, preceding the formation of the National Rugby League (NRL).
-
E.
Ap
Ap is the commonly used abbreviation for the Norwegian Labour Party, a major social-democratic political party in Norway.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
globular cluster ⓘ |
| age | old stellar population ⓘ |
| angularSize | approximately 5 arcminutes ⓘ |
| apparentMagnitudeV | approximately 13.8 ⓘ |
| associatedWith |
Sagittarius Stream
ⓘ
surface form:
Sagittarius stellar stream
|
| belongsTo |
Local Group
ⓘ
Sagittarius dwarf galaxy globular cluster system ⓘ
surface form:
Sagittarius globular cluster system
|
| catalog |
Arp
ⓘ
European Southern Observatory ⓘ
surface form:
ESO
GCl ⓘ |
| contains | Population II stars ⓘ |
| discoveredBy | Halton Arp ⓘ |
| distanceFromEarth |
approximately 21 kiloparsecs
ⓘ
approximately 70,000 light-years ⓘ |
| distanceFromGalacticCenter | approximately 28 kiloparsecs ⓘ |
| gravitationallyBoundTo | Sagittarius Dwarf Spheroidal Galaxy ⓘ |
| hasAlternativeName |
ESO 456-SC38
ⓘ
GCl 110 ⓘ |
| hasDeclination | approximately −30° 21′ ⓘ |
| hasRightAscension | approximately 19h 28m ⓘ |
| hasStellarPopulation | metal-poor stars ⓘ |
| hasType | outer-halo globular cluster ⓘ |
| hostGalaxy | Sagittarius Dwarf Spheroidal Galaxy ⓘ |
| locatedIn |
Milky Way stellar halo
ⓘ
surface form:
Milky Way halo
Sagittarius constellation region of the sky ⓘ |
| locatedInConstellation | Sagittarius ⓘ |
| memberOf | Sagittarius Dwarf Spheroidal Galaxy ⓘ |
| metallicity | low-metallicity globular cluster ⓘ |
| namedAfter | Halton Arp ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| orbits | Milky Way ⓘ |
| partOf |
Sagittarius Dwarf Spheroidal Galaxy
ⓘ
surface form:
Sagittarius Dwarf Spheroidal Galaxy system
|
| usedFor |
studies of galaxy accretion onto the Milky Way
ⓘ
studies of globular cluster formation in dwarf galaxies ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Arp 2 Description of subject: Arp 2 is a globular star cluster located in the Sagittarius constellation and is considered part of the Sagittarius Dwarf Spheroidal Galaxy system.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.