IC 4617
E918814
IC 4617 is a faint, distant spiral galaxy in the constellation Hercules, often noted in amateur astronomy because it appears in the same field of view as the bright globular cluster Messier 13.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IC 4617 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11317220 — 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: IC 4617 Context triple: [M 13, hasNearbyGalaxy, IC 4617]
-
A.
IC 4665
IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
-
B.
IC 4756
IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
-
C.
IC 4715
IC 4715 is a bright, star-rich region of the Milky Way in the constellation Sagittarius, commonly known as the Small Sagittarius Star Cloud.
-
D.
IC 4895
IC 4895 is a barred irregular dwarf galaxy in the Local Group, better known as NGC 6822 or Barnard's Galaxy, located in the constellation Sagittarius.
-
E.
IC 4725
IC 4725 is an open star cluster in the constellation Sagittarius, better known as Messier 25, visible with binoculars or small telescopes.
- 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: IC 4617 Target entity description: IC 4617 is a faint, distant spiral galaxy in the constellation Hercules, often noted in amateur astronomy because it appears in the same field of view as the bright globular cluster Messier 13.
-
A.
IC 4665
IC 4665 is a bright, young open star cluster located in the constellation Ophiuchus, visible with binoculars or small telescopes.
-
B.
IC 4756
IC 4756 is a large, bright open star cluster in the constellation Serpens, often observed as a rich field of moderately aged stars.
-
C.
IC 4715
IC 4715 is a bright, star-rich region of the Milky Way in the constellation Sagittarius, commonly known as the Small Sagittarius Star Cloud.
-
D.
IC 4895
IC 4895 is a barred irregular dwarf galaxy in the Local Group, better known as NGC 6822 or Barnard's Galaxy, located in the constellation Sagittarius.
-
E.
IC 4725
IC 4725 is an open star cluster in the constellation Sagittarius, better known as Messier 25, visible with binoculars or small telescopes.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
galaxy
ⓘ
spiral galaxy ⓘ |
| angularSize | ~0.7′ × 0.3′ ⓘ |
| apparentMagnitude | faint ⓘ |
| apparentMagnitudeV | ~15.2 ⓘ |
| appearance | elongated, edge-on or highly inclined spiral ⓘ |
| catalog |
IC
ⓘ
Index Catalogue NERFINISHED ⓘ |
| catalogDesignation | IC 4617 NERFINISHED ⓘ |
| constellation | Hercules NERFINISHED ⓘ |
| coordinateSystem | equatorial ⓘ |
| declination | +36° 28′ (approx) ⓘ |
| discoveryCatalog | Second Index Catalogue (IC II) NERFINISHED ⓘ |
| discoveryMethod | photographic survey ⓘ |
| distance |
~150 Mpc
ⓘ
~490 million light-years ⓘ |
| environment | field galaxy (not in a rich nearby cluster) ⓘ |
| epoch | J2000 ⓘ |
| galacticLatitude | +40° (approx) ⓘ |
| galacticLongitude | 59° (approx) ⓘ |
| hostConstellationType | northern constellation ⓘ |
| hostEnvironment | background galaxy behind the Milky Way halo in direction of Hercules ⓘ |
| locatedIn |
Hercules constellation region of the sky
NERFINISHED
ⓘ
observable universe ⓘ |
| morphologicalType | Sc ⓘ |
| nearObject |
Messier 13
NERFINISHED
ⓘ
NGC 6205 NERFINISHED ⓘ |
| notableFor | proximity in the sky to globular cluster M13 ⓘ |
| observedBy |
amateur astronomers
ⓘ
professional observatories ⓘ |
| observingInterest | appears in same field as M13 for amateur observers ⓘ |
| orientation | high inclination to line of sight ⓘ |
| photographicMagnitude | ~15 ⓘ |
| positionRelativeToM13 | very close in the same telescopic field ⓘ |
| radialVelocity | ~10800 km/s ⓘ |
| redshift | ~0.036 ⓘ |
| rightAscension | 16h 41m (approx) ⓘ |
| skyLocation | northern celestial hemisphere ⓘ |
| spectralFeature | shows redshifted spectral lines typical of distant galaxies ⓘ |
| structure |
disk galaxy
ⓘ
spiral arms ⓘ |
| surfaceBrightness | very low ⓘ |
| visibility | requires medium to large 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: IC 4617 Description of subject: IC 4617 is a faint, distant spiral galaxy in the constellation Hercules, often noted in amateur astronomy because it appears in the same field of view as the bright globular cluster Messier 13.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.