Cassiopeia
E453402
Cassiopeia is a prominent W-shaped constellation in the northern sky, easily recognizable and rich in notable deep-sky objects and astronomical phenomena.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Cassiopeia canonical | 19 |
| constellation Cassiopeia | 4 |
| Cassiopeia constellation | 1 |
| Cassiopeia constellation region | 1 |
| CassiopeiaConstellation | 1 |
| Cepheus | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4566476 — 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: Cassiopeia Context triple: [SN 1572, locatedInConstellation, Cassiopeia]
-
A.
Cassiopeia
"Cassiopeia" is a track by the indie music project Walnut Whales, known for its gentle, atmospheric style.
-
B.
Cassiopeia
Cassiopeia is a song by Joanna Newsom, known for its intricate harp accompaniment and mythologically inspired lyrics.
-
C.
Corona Borealis
Corona Borealis is a small but distinctive northern constellation known for its semicircular arc of stars, often associated in mythology with Ariadne’s crown.
-
D.
Cygnis
Cygnis is a digital product development company specializing in custom web and mobile applications, often leveraging emerging technologies like AI and cloud platforms.
-
E.
Cetus
Cetus is a large constellation in the equatorial region of the sky, often associated with a mythological sea monster or whale in Greek mythology.
- 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: Cassiopeia Target entity description: Cassiopeia is a prominent W-shaped constellation in the northern sky, easily recognizable and rich in notable deep-sky objects and astronomical phenomena.
-
A.
Cassiopeia
Cassiopeia is a song by Joanna Newsom, known for its intricate harp accompaniment and mythologically inspired lyrics.
-
B.
Cassiopeia
"Cassiopeia" is a track by the indie music project Walnut Whales, known for its gentle, atmospheric style.
-
C.
Corona Borealis
Corona Borealis is a small but distinctive northern constellation known for its semicircular arc of stars, often associated in mythology with Ariadne’s crown.
-
D.
Cygnis
Cygnis is a digital product development company specializing in custom web and mobile applications, often leveraging emerging technologies like AI and cloud platforms.
-
E.
Cetus
Cetus is a large constellation in the equatorial region of the sky, often associated with a mythological sea monster or whale in Greek mythology.
- F. None of above. chosen
Statements (57)
| Predicate | Object |
|---|---|
| instanceOf |
astronomicalObject
ⓘ
constellation ⓘ |
| abbreviation | Cas NERFINISHED ⓘ |
| areaSquareDegrees | approximately 598 ⓘ |
| associatedMyth | Perseus myth cycle NERFINISHED ⓘ |
| borderingConstellation |
Andromeda
NERFINISHED
ⓘ
Camelopardalis NERFINISHED ⓘ Cepheus NERFINISHED ⓘ Lacerta NERFINISHED ⓘ Perseus NERFINISHED ⓘ |
| brightestStar | Schedar NERFINISHED ⓘ |
| brightestStarApparentMagnitude | approximately 2.2 ⓘ |
| catalogue |
one of the 48 constellations listed by Ptolemy
ⓘ
one of the 88 modern IAU constellations ⓘ |
| circumpolarFromLatitude | greater than about 40 degrees north ⓘ |
| containsGalaxy |
NGC 147
NERFINISHED
ⓘ
NGC 185 NERFINISHED ⓘ |
| containsNebula |
Heart Nebula
NERFINISHED
ⓘ
Pacman Nebula NERFINISHED ⓘ Soul Nebula NERFINISHED ⓘ |
| containsOpenCluster |
Messier 103
NERFINISHED
ⓘ
Messier 52 NERFINISHED ⓘ NGC 457 NERFINISHED ⓘ NGC 654 NERFINISHED ⓘ NGC 663 NERFINISHED ⓘ |
| containsRadioSource | Cassiopeia A NERFINISHED ⓘ |
| containsStar |
Caph
NERFINISHED
ⓘ
Gamma Cassiopeiae NERFINISHED ⓘ Ruchbah NERFINISHED ⓘ Schedar NERFINISHED ⓘ Segin NERFINISHED ⓘ |
| containsSupernovaRemnant | Cassiopeia A NERFINISHED ⓘ |
| containsVariableStar |
Gamma Cassiopeiae
NERFINISHED
ⓘ
Rho Cassiopeiae NERFINISHED ⓘ V509 Cassiopeiae NERFINISHED ⓘ |
| culturalSignificance | used for navigation in the northern hemisphere ⓘ |
| declination | approximately +60 degrees ⓘ |
| family | Perseus family of constellations NERFINISHED ⓘ |
| firstCataloguedBy | Ptolemy NERFINISHED ⓘ |
| genitiveForm | Cassiopeiae NERFINISHED ⓘ |
| hemisphere | northern celestial hemisphere ⓘ |
| IAUApprovalYear | 1922 ⓘ |
| IAUBoundaryDefinitionYear | 1930 ⓘ |
| meteorShowerRadiant | Perseids vicinity ⓘ |
| MilkyWayPassesThrough | true ⓘ |
| mythologicalOrigin | Queen Cassiopeia of Aethiopia in Greek mythology NERFINISHED ⓘ |
| name | Cassiopeia NERFINISHED ⓘ |
| notableAsterism | W-shaped pattern of five bright stars ⓘ |
| orientationRelativeToPolaris | opposite the Big Dipper across Polaris ⓘ |
| quadrant | NQ1 ⓘ |
| rankByArea | 25th largest constellation ⓘ |
| rightAscension | approximately 1 hour ⓘ |
| symbol | W-shaped asterism ⓘ |
| visibleFromLatitudeRange | 90 to -20 degrees ⓘ |
| visibleInMonth |
December
ⓘ
November ⓘ |
| zodiacal | false ⓘ |
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: Cassiopeia Description of subject: Cassiopeia is a prominent W-shaped constellation in the northern sky, easily recognizable and rich in notable deep-sky objects and astronomical phenomena.
Referenced by (27)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Cassiopeia
linked to: Cassiopeia
subject linked to:
NGC 281 (Pacman Nebula)
linked to: Cassiopeia
subject linked to:
IC 1805 (Heart Nebula)
subject linked to:
IC 1848 (Soul Nebula)
subject linked to:
rescuing Andromeda
subject linked to:
rescuing Andromeda
linked to: Cassiopeia
linked to: Cassiopeia
subject linked to:
Cassiopeia from Greek mythology
linked to: Cassiopeia
subject linked to:
Cassiopeia from Greek mythology
linked to: Cassiopeia