Messier 67
E141268
Messier 67 is a rich, old open star cluster located in the constellation Cancer and is one of the most studied stellar clusters in the Milky Way.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Messier 67 canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T1206475 — 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 67 Context triple: [Cancer, containsDeepSkyObject, Messier 67]
-
A.
Messier 55
Messier 55 is a large, relatively loose globular star cluster located in the constellation Sagittarius, visible in small telescopes as a faint, diffuse ball of stars.
-
B.
Messier 45
Messier 45, commonly known as the Pleiades, is a prominent open star cluster in the constellation Taurus, easily visible to the naked eye and famous in many cultures worldwide.
-
C.
Messier 70
Messier 70 is a dense globular star cluster located in the constellation Sagittarius near the center of the Milky Way galaxy.
-
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 54
Messier 54 is a dense globular star cluster located in the constellation Sagittarius, notable for being one of the first globular clusters found to belong to a dwarf galaxy outside the Milky Way.
- 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 67 Target entity description: Messier 67 is a rich, old open star cluster located in the constellation Cancer and is one of the most studied stellar clusters in the Milky Way.
-
A.
Messier 55
Messier 55 is a large, relatively loose globular star cluster located in the constellation Sagittarius, visible in small telescopes as a faint, diffuse ball of stars.
-
B.
Messier 45
Messier 45, commonly known as the Pleiades, is a prominent open star cluster in the constellation Taurus, easily visible to the naked eye and famous in many cultures worldwide.
-
C.
Messier 70
Messier 70 is a dense globular star cluster located in the constellation Sagittarius near the center of the Milky Way galaxy.
-
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 54
Messier 54 is a dense globular star cluster located in the constellation Sagittarius, notable for being one of the first globular clusters found to belong to a dwarf galaxy outside the Milky Way.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Messier object
ⓘ
NGC object ⓘ astronomical object ⓘ open star cluster ⓘ |
| addedToMessierCatalogueBy | Charles Messier ⓘ |
| age |
about 4 billion years
ⓘ
between 3.5 and 4.5 billion years ⓘ |
| angularSize | 30 arcminutes ⓘ |
| apparentMagnitudeV | 6.1 ⓘ |
| bestSeenIn |
April
ⓘ
March ⓘ May ⓘ spring ⓘ |
| catalogCode |
C 0844+120
ⓘ
M67 ⓘ NGC 2682 ⓘ
linked to:
NGC 2632
|
| contains |
blue straggler stars
ⓘ
main-sequence stars ⓘ red giant stars ⓘ white dwarfs ⓘ |
| declination | +11° 49′ ⓘ |
| discoveredBy | Johann Gottfried Koehler ⓘ |
| discoveryYear | 1779 ⓘ |
| distanceFromEarth |
about 2700 light-years
ⓘ
about 800 parsecs ⓘ |
| estimatedNumberOfStars |
more than 500
ⓘ
of order 1000 ⓘ |
| galacticLatitude | +31.9 degrees ⓘ |
| galacticLongitude | 215.7 degrees ⓘ |
| hasAlternativeName |
M 67
ⓘ
linked to:
M67
NGC 2682 ⓘ
linked to:
NGC 2632
|
| hasSimilarAgeTo |
the Sun
ⓘ
linked to:
Sun
|
| hasSimilarMetallicityTo |
the Sun
ⓘ
linked to:
Sun
|
| isOldCluster | true ⓘ |
| isRichCluster | true ⓘ |
| isWellStudied | true ⓘ |
| locatedIn |
Galactic disk
ⓘ
Milky Way ⓘ |
| locatedInConstellation | Cancer ⓘ |
| messierCatalogueNumber | 67 ⓘ |
| metallicity | approximately solar ⓘ |
| ngcNumber | 2682 ⓘ |
| observedIn |
X-ray wavelengths
ⓘ
infrared wavelengths ⓘ optical wavelengths ⓘ |
| rightAscension | 08h 51m ⓘ |
| usedAs |
benchmark for open cluster dynamics
ⓘ
benchmark for stellar evolution studies ⓘ reference for solar-age stellar populations ⓘ |
| visibleFrom | Northern Hemisphere ⓘ |
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 67 Description of subject: Messier 67 is a rich, old open star cluster located in the constellation Cancer and is one of the most studied stellar clusters in the Milky Way.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.