Messier 26
E463800
Messier 26 is an open star cluster located in the constellation Scutum, notable for its relatively compact grouping of stars and moderate brightness.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Messier 26 canonical | 2 |
| open cluster M26 | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4619155 — 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: Messier 26 Context triple: [Scutum, contains, Messier 26]
-
A.
Messier 21
Messier 21 is a young open star cluster in the constellation Sagittarius, notable for its bright, densely packed hot stars and proximity to the Trifid Nebula.
-
B.
Messier 28
Messier 28 is a dense globular star cluster located in the constellation Sagittarius, composed of hundreds of thousands of ancient stars.
-
C.
Messier 25
Messier 25 is an open star cluster located in the constellation Sagittarius, visible to the naked eye under dark skies.
-
D.
Messier 22
Messier 22 is a bright globular star cluster located near the center of the Milky Way, visible in the constellation Sagittarius and notable for being one of the closest and most easily observed clusters of its kind.
-
E.
Messier 20
Messier 20, also known as the Trifid Nebula, is a bright, star-forming emission and reflection nebula famous for its striking three-lobed appearance.
- 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: Messier 26 Target entity description: Messier 26 is an open star cluster located in the constellation Scutum, notable for its relatively compact grouping of stars and moderate brightness.
-
A.
Messier 21
Messier 21 is a young open star cluster in the constellation Sagittarius, notable for its bright, densely packed hot stars and proximity to the Trifid Nebula.
-
B.
Messier 28
Messier 28 is a dense globular star cluster located in the constellation Sagittarius, composed of hundreds of thousands of ancient stars.
-
C.
Messier 25
Messier 25 is an open star cluster located in the constellation Sagittarius, visible to the naked eye under dark skies.
-
D.
Messier 22
Messier 22 is a bright globular star cluster located near the center of the Milky Way, visible in the constellation Sagittarius and notable for being one of the closest and most easily observed clusters of its kind.
-
E.
Messier 20
Messier 20, also known as the Trifid Nebula, is a bright, star-forming emission and reflection nebula famous for its striking three-lobed appearance.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
Messier object
ⓘ
NGC object ⓘ open star cluster ⓘ |
| age |
80 million years
ⓘ
8×10^7 years ⓘ |
| angularSize | 15 arcminutes ⓘ |
| apparentMagnitudeV | 8.0 ⓘ |
| bestSeenFrom | Northern Hemisphere ⓘ |
| bestViewingSeason | summer ⓘ |
| brightnessClass | moderately bright open cluster ⓘ |
| catalogCode |
M26
ⓘ
NGC 6694 ⓘ |
| cataloguedIn |
Messier Catalogue of Nebulae and Star Clusters
ⓘ
linked to:
Messier catalogue
New General Catalogue (NGC) ⓘ
linked to:
New General Catalogue
|
| clusterType | galactic open cluster ⓘ |
| compactness | relatively compact for an open cluster ⓘ |
| constellation | Scutum ⓘ |
| contains |
giant stars
ⓘ
main-sequence stars ⓘ |
| declination | −09° 24′ ⓘ |
| discoveredBy | Charles Messier ⓘ |
| discoveredIn | France ⓘ |
| discoveryDate | 1764 ⓘ |
| distanceFromEarth |
1.5 kiloparsecs
ⓘ
5000 light-years ⓘ |
| galacticLatitude | −5° ⓘ |
| galacticLongitude | 18° ⓘ |
| hasAlternateName |
M26
ⓘ
NGC 6694 ⓘ |
| hasApproximateStarCount | dozens of member stars ⓘ |
| locatedIn |
Galactic disk
ⓘ
Milky Way ⓘ constellation of the Shield ⓘ |
| locatedNear | Scutum Star Cloud ⓘ |
| metallicity | near-solar ⓘ |
| observedIn | optical wavelengths ⓘ |
| partOf |
Messier catalogue
ⓘ
New General Catalogue ⓘ |
| rightAscension | 18h 45m ⓘ |
| visibility | visible with small telescopes ⓘ |
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: Messier 26 Description of subject: Messier 26 is an open star cluster located in the constellation Scutum, notable for its relatively compact grouping of stars and moderate brightness.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Scutum constellation
subject linked to:
Scutum constellation
linked to: Messier 26
linked to: Messier 26