NGC 6822
E100926
NGC 6822 is a barred irregular dwarf galaxy located in the constellation Sagittarius and is one of the nearest and best-studied galaxies outside the Milky Way.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 6822 canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T869143 — 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: NGC 6822 Context triple: [Local Group, contains, NGC 6822]
-
A.
Carina Nebula
The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
-
B.
Triangulum Galaxy
The Triangulum Galaxy is a nearby spiral galaxy in the Local Group, notable as one of the closest large galaxies to the Milky Way and a companion to the Andromeda Galaxy.
-
C.
Magellanic Clouds
The Magellanic Clouds are two irregular dwarf galaxies orbiting the Milky Way, prominently visible from the Southern Hemisphere as hazy patches in the night sky.
-
D.
Stephan's Quintet
Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
-
E.
Baade’s star
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
- 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: NGC 6822 Target entity description: NGC 6822 is a barred irregular dwarf galaxy located in the constellation Sagittarius and is one of the nearest and best-studied galaxies outside the Milky Way.
-
A.
Carina Nebula
The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
-
B.
Triangulum Galaxy
The Triangulum Galaxy is a nearby spiral galaxy in the Local Group, notable as one of the closest large galaxies to the Milky Way and a companion to the Andromeda Galaxy.
-
C.
Magellanic Clouds
The Magellanic Clouds are two irregular dwarf galaxies orbiting the Milky Way, prominently visible from the Southern Hemisphere as hazy patches in the night sky.
-
D.
Stephan's Quintet
Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
-
E.
Baade’s star
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Local Group galaxy
ⓘ
barred irregular dwarf galaxy ⓘ extragalactic object ⓘ |
| absoluteMagnitudeV | about −15.2 ⓘ |
| alsoKnownAs |
Barnard's Galaxy
ⓘ
IC 4895 ⓘ PGC 63616 ⓘ |
| angularSize | about 15.5 × 13.5 arcminutes ⓘ |
| apparentMagnitudeV | about 9.3 ⓘ |
| catalog |
Index Catalogue
ⓘ
New General Catalogue ⓘ Principal Galaxies Catalogue ⓘ |
| contains |
H II regions
ⓘ
old stellar population ⓘ planetary nebulae ⓘ young star-forming regions ⓘ |
| declination | −14° 48′ 12″ ⓘ |
| diameter | about 7,000 light-years ⓘ |
| discoveredBy | Edward Emerson Barnard ⓘ |
| discoveryYear | 1884 ⓘ |
| distanceFromEarth |
about 1.6 million light-years
ⓘ
about 500 kiloparsecs ⓘ |
| distanceFromMilkyWay | about 1.6 million light-years ⓘ |
| gasContent | rich in neutral hydrogen ⓘ |
| hasBar | yes ⓘ |
| hasDustExtinction | significant foreground extinction ⓘ |
| hasGalaxyType | dwarf irregular ⓘ |
| hasSatelliteStatus | possible satellite of the Milky Way ⓘ |
| hasStarFormation | ongoing ⓘ |
| hasStellarPopulation |
Population I stars
ⓘ
Population II stars ⓘ |
| isOneOf |
best-studied dwarf irregular galaxies
ⓘ
nearest galaxies outside the Milky Way ⓘ |
| locatedInConstellation | Sagittarius ⓘ |
| locatedInRegion | near the Milky Way galactic plane ⓘ |
| mass | on the order of 10^9 solar masses ⓘ |
| memberOf | Local Group ⓘ |
| metallicity | low ⓘ |
| morphologicalType | IB(s)m ⓘ |
| notableFor | first galaxy beyond the Milky Way with Cepheid-based distance measurement by Hubble ⓘ |
| observedBy | Edwin Hubble ⓘ |
| observedWith |
Hubble Space Telescope
ⓘ
Spitzer Space Telescope ⓘ Very Large Telescope ⓘ |
| radialVelocity | about −57 km/s ⓘ |
| redshift | −0.000163 ⓘ |
| rightAscension | 19h 44m 57s ⓘ |
| usedFor |
calibration of the extragalactic distance scale
ⓘ
studies of dwarf galaxy evolution ⓘ studies of resolved stellar populations ⓘ |
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: NGC 6822 Description of subject: NGC 6822 is a barred irregular dwarf galaxy located in the constellation Sagittarius and is one of the nearest and best-studied galaxies outside the Milky Way.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.