GK Persei
E554034
GK Persei is a well-known cataclysmic variable star and classical nova in the constellation Perseus, famous for its dramatic 1901 nova outburst and expanding nebular remnant.
All labels observed (1)
| Label | Occurrences |
|---|---|
| GK Persei canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5911127 — 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: GK Persei Context triple: [Perseus constellation, contains, GK Persei]
-
A.
Caldwell 49
Caldwell 49 is a large, bright emission nebula and star-forming region in the constellation Monoceros, popularly known as the Rosette Nebula.
-
B.
Jewel Box cluster
The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.
-
C.
Barnard 5
Barnard 5 is a dark molecular cloud and active star-forming region located within the Perseus molecular cloud complex.
-
D.
Messier 44
Messier 44, also known as the Beehive Cluster or Praesepe, is a bright open star cluster visible to the naked eye and one of the nearest such clusters to Earth.
-
E.
Caldwell 14
Caldwell 14 is an open star cluster in the constellation Perseus, forming part of the famous Double Cluster visible to the naked eye in dark skies.
- 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: GK Persei Target entity description: GK Persei is a well-known cataclysmic variable star and classical nova in the constellation Perseus, famous for its dramatic 1901 nova outburst and expanding nebular remnant.
-
A.
Caldwell 49
Caldwell 49 is a large, bright emission nebula and star-forming region in the constellation Monoceros, popularly known as the Rosette Nebula.
-
B.
Jewel Box cluster
The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.
-
C.
Barnard 5
Barnard 5 is a dark molecular cloud and active star-forming region located within the Perseus molecular cloud complex.
-
D.
Messier 44
Messier 44, also known as the Beehive Cluster or Praesepe, is a bright open star cluster visible to the naked eye and one of the nearest such clusters to Earth.
-
E.
Caldwell 14
Caldwell 14 is an open star cluster in the constellation Perseus, forming part of the famous Double Cluster visible to the naked eye in dark skies.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
binary star system
ⓘ
cataclysmic variable star ⓘ classical nova ⓘ |
| accretionMechanism | accretion disk ⓘ |
| apparentMagnitudeAtMaximum |
0.0–0.2
ⓘ
0.2 ⓘ |
| apparentMagnitudeQuiescent | ~13 ⓘ |
| catalogDesignation |
BD+43 807
NERFINISHED
ⓘ
GK Per NERFINISHED ⓘ HD 27045 NERFINISHED ⓘ HIP 17462 NERFINISHED ⓘ HR 1200 NERFINISHED ⓘ |
| constellation | Perseus NERFINISHED ⓘ |
| discoveredBy | Thomas David Anderson NERFINISHED ⓘ |
| discoveryMethod | visual observation ⓘ |
| distanceFromEarth |
~1500 light-years
ⓘ
~470 parsecs ⓘ |
| ejectedMaterial | expanding knots and filaments ⓘ |
| galacticPopulation | Milky Way NERFINISHED ⓘ |
| hasComponent |
K-type subgiant donor star
ⓘ
white dwarf ⓘ |
| hasRemnant | expanding nova shell ⓘ |
| locatedIn | northern celestial hemisphere ⓘ |
| notableFor |
being a prototype for studies of old nova remnants
ⓘ
dramatic 1901 nova outburst ⓘ well-resolved expanding nova remnant ⓘ |
| novaOutburstDate | 1901-02-21 ⓘ |
| novaOutburstYear | 1901 ⓘ |
| orbitalPeriod | ~1.9968 days ⓘ |
| otherName |
Nova Persei
NERFINISHED
ⓘ
Nova Persei 1901 NERFINISHED ⓘ X-ray source 4U 0302+30 NERFINISHED ⓘ |
| outburstType |
classical nova
ⓘ
recurrent dwarf-nova-like outbursts ⓘ |
| peakBrightnessComparison | became one of the brightest novae of the 20th century ⓘ |
| remnantExpansion | measurable proper motion of nebular knots ⓘ |
| remnantObservedIn |
X-ray wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| remnantType | nova remnant nebula ⓘ |
| shows |
X-ray emission
ⓘ
dwarf nova outbursts ⓘ optical variability ⓘ |
| spectralTypeCompanion | K2IV ⓘ |
| variableStarType |
dwarf nova-like cataclysmic variable
ⓘ
intermediate polar ⓘ |
| whiteDwarfSpinPeriod | ~351 seconds ⓘ |
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: GK Persei Description of subject: GK Persei is a well-known cataclysmic variable star and classical nova in the constellation Perseus, famous for its dramatic 1901 nova outburst and expanding nebular remnant.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.