NGC 5102
E501818
NGC 5102 is a lenticular galaxy in the constellation Centaurus, notable for its relatively nearby distance and membership in the Centaurus A/M83 galaxy group.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NGC 5102 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4835295 — 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 5102 Context triple: [Centaurus A/M83 Group, containsGalaxy, NGC 5102]
-
A.
NGC 6611
NGC 6611 is a young, massive open star cluster embedded within the Eagle Nebula, notable for illuminating and shaping its surrounding interstellar gas and dust.
-
B.
NGC 6705
NGC 6705 is a rich, compact open star cluster in the constellation Scutum, notable for its high stellar density and brightness, making it one of the most impressive open clusters in the Milky Way.
-
C.
NGC 6205
NGC 6205 is a bright, densely packed globular star cluster in the constellation Hercules, commonly known as the Great Hercules Cluster (M13).
-
D.
NGC 6514
NGC 6514 is a bright, colorful emission and reflection nebula in the constellation Sagittarius, widely known as the Trifid Nebula.
-
E.
NGC 221
NGC 221 is a compact dwarf elliptical galaxy in the Local Group, best known as the bright satellite galaxy M32 orbiting the Andromeda Galaxy.
- 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 5102 Target entity description: NGC 5102 is a lenticular galaxy in the constellation Centaurus, notable for its relatively nearby distance and membership in the Centaurus A/M83 galaxy group.
-
A.
NGC 6611
NGC 6611 is a young, massive open star cluster embedded within the Eagle Nebula, notable for illuminating and shaping its surrounding interstellar gas and dust.
-
B.
NGC 6705
NGC 6705 is a rich, compact open star cluster in the constellation Scutum, notable for its high stellar density and brightness, making it one of the most impressive open clusters in the Milky Way.
-
C.
NGC 6205
NGC 6205 is a bright, densely packed globular star cluster in the constellation Hercules, commonly known as the Great Hercules Cluster (M13).
-
D.
NGC 6514
NGC 6514 is a bright, colorful emission and reflection nebula in the constellation Sagittarius, widely known as the Trifid Nebula.
-
E.
NGC 221
NGC 221 is a compact dwarf elliptical galaxy in the Local Group, best known as the bright satellite galaxy M32 orbiting the Andromeda Galaxy.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
galaxy
ⓘ
lenticular galaxy ⓘ |
| absoluteMagnitudeV | ~−18 ⓘ |
| angularSize | ~8.7 × 2.8 arcmin ⓘ |
| apparentMagnitudeB | ~10.4 ⓘ |
| apparentMagnitudeV | ~9.9 ⓘ |
| bulge | prominent bulge ⓘ |
| catalog | New General Catalogue ⓘ |
| color | overall blue-green visual appearance in images ⓘ |
| constellation | Centaurus ⓘ |
| coordinateSystem | equatorial coordinate system (J2000) ⓘ |
| declination | −36° 38′ (approx) ⓘ |
| discovery | discovered in the 19th century ⓘ |
| discoveryCataloger |
John Louis Emil Dreyer (cataloged in NGC)
ⓘ
linked to:
John Louis Emil Dreyer
|
| disk | lens-like stellar disk ⓘ |
| distanceFromEarth |
~11 Mly
ⓘ
~3.3 Mpc ⓘ |
| dustContent | contains some dust lanes and patches ⓘ |
| environment | member of a loose galaxy group environment ⓘ |
| galaxyGroup |
Centaurus A Group
ⓘ
linked to:
Centaurus A/M83 Group
Centaurus A/M83 Group ⓘ |
| gasContent | relatively gas-poor ⓘ |
| groupDominantGalaxy |
Centaurus A (NGC 5128)
ⓘ
linked to:
NGC 5128
|
| hemisphere | southern celestial hemisphere ⓘ |
| HIContent | contains relatively little neutral hydrogen ⓘ |
| HubbleSequencePosition | early-type disk galaxy ⓘ |
| interactionStatus | no strong current tidal interaction signatures ⓘ |
| locationRelativeToMilkyWay | in the nearby universe outside the Local Group ⓘ |
| majorAxisAngularSize | ~8.7 arcmin ⓘ |
| mass | on the order of 10^10 solar masses ⓘ |
| minorAxisAngularSize | ~2.8 arcmin ⓘ |
| morphologicalType |
S0
ⓘ
SA0- ⓘ |
| NGCNumber | 5102 ⓘ |
| nucleus | hosts a compact nuclear region ⓘ |
| otherDesignation |
ESO 270-17
ⓘ
HIPASS J1321-36 ⓘ PGC 46668 ⓘ |
| radialVelocity | ~468 km/s ⓘ |
| redshift | ~0.0009 ⓘ |
| researchUse | used as a laboratory for studying lenticular galaxy evolution ⓘ |
| rightAscension | 13h 21m (approx) ⓘ |
| spectralFeatures | shows absorption-line dominated spectrum with some emission regions ⓘ |
| starburstHistory | evidence for past central starburst ⓘ |
| starFormationActivity | low current star formation rate ⓘ |
| stellarPopulation | dominantly intermediate-age and old stars ⓘ |
| supermassiveBlackHolePresence | likely hosts a central massive black hole ⓘ |
| surfaceBrightness | relatively high central surface brightness ⓘ |
| visibility | observable with small amateur 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: NGC 5102 Description of subject: NGC 5102 is a lenticular galaxy in the constellation Centaurus, notable for its relatively nearby distance and membership in the Centaurus A/M83 galaxy group.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.