Mordor Macula
E481633
Mordor Macula is a dark, reddish region near the north pole of Pluto’s moon Charon, notable for its striking color contrast and likely composed of processed hydrocarbons.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mordor Macula canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T4943266 — 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: Mordor Macula Context triple: [Charon, hasFeature, Mordor Macula]
-
A.
Noctis Labyrinthus
Noctis Labyrinthus is a geologically complex region of deep, intersecting valleys and collapsed terrain on Mars, located at the western end of the Valles Marineris canyon system.
-
B.
Chryse Planitia
Chryse Planitia is a broad, low-lying plain in Mars’s northern hemisphere that has served as a major landing site for robotic missions exploring the Martian surface.
-
C.
Sputnik Planitia
Sputnik Planitia is a vast, bright, heart-shaped nitrogen-ice plain on Pluto, notable for its smooth, crater-free surface and evidence of active glacial and convective processes.
-
D.
Great Dark Spot
The Great Dark Spot is a massive, short-lived anticyclonic storm system in Neptune’s atmosphere, similar in appearance to Jupiter’s Great Red Spot.
-
E.
Meridiani Planum
Meridiani Planum is a flat, ancient plain on Mars notable for its layered sedimentary rocks and mineral evidence of past water, famously explored by NASA's Opportunity rover.
- 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: Mordor Macula Target entity description: Mordor Macula is a dark, reddish region near the north pole of Pluto’s moon Charon, notable for its striking color contrast and likely composed of processed hydrocarbons.
-
A.
Noctis Labyrinthus
Noctis Labyrinthus is a geologically complex region of deep, intersecting valleys and collapsed terrain on Mars, located at the western end of the Valles Marineris canyon system.
-
B.
Chryse Planitia
Chryse Planitia is a broad, low-lying plain in Mars’s northern hemisphere that has served as a major landing site for robotic missions exploring the Martian surface.
-
C.
Sputnik Planitia
Sputnik Planitia is a vast, bright, heart-shaped nitrogen-ice plain on Pluto, notable for its smooth, crater-free surface and evidence of active glacial and convective processes.
-
D.
Great Dark Spot
The Great Dark Spot is a massive, short-lived anticyclonic storm system in Neptune’s atmosphere, similar in appearance to Jupiter’s Great Red Spot.
-
E.
Meridiani Planum
Meridiani Planum is a flat, ancient plain on Mars notable for its layered sedimentary rocks and mineral evidence of past water, famously explored by NASA's Opportunity rover.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
albedo feature
ⓘ
planetary surface feature ⓘ |
| associatedWithProcess |
cold trapping of gases from Pluto's atmosphere
ⓘ
radiation processing of hydrocarbons ⓘ |
| belongsTo |
Kuiper belt object system
ⓘ
linked to:
Kuiper Belt objects
|
| color |
dark
ⓘ
reddish ⓘ |
| contrastWith | brighter surrounding icy terrain ⓘ |
| discoveredBy |
New Horizons spacecraft
ⓘ
linked to:
New Horizons
|
| discoveryDate | 2015 ⓘ |
| featureType | macula ⓘ |
| hasCoordinateHemisphere | northern hemisphere of Charon ⓘ |
| hostBody | Charon ⓘ |
| imagedBy |
New Horizons LORRI camera
ⓘ
linked to:
LORRI
New Horizons Ralph instrument ⓘ |
| likelyComposedOf |
processed hydrocarbons
ⓘ
tholins ⓘ |
| locatedIn | northern polar region of Charon ⓘ |
| locatedOn | Charon ⓘ |
| namedAfter | Mordor ⓘ |
| nameOrigin | fictional land of Mordor from J. R. R. Tolkien's Middle-earth ⓘ |
| namingAuthority | International Astronomical Union ⓘ |
| notableFor | striking color contrast with surrounding terrain ⓘ |
| observedIn |
near-infrared wavelengths
ⓘ
visible wavelengths ⓘ |
| orbitsWithPrimary | Pluto ⓘ |
| status | officially named planetary feature ⓘ |
| surfaceAppearance | irregularly shaped polar cap ⓘ |
| surfaceCompositionContext | contrasts with water-ice rich regions on Charon ⓘ |
| system | Pluto system ⓘ |
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: Mordor Macula Description of subject: Mordor Macula is a dark, reddish region near the north pole of Pluto’s moon Charon, notable for its striking color contrast and likely composed of processed hydrocarbons.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.