Hercules Dwarf Galaxy
E493640
Hercules Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Hercules and classified as a dwarf spheroidal galaxy.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hercules Dwarf Galaxy canonical | 1 |
| Hercules dwarf spheroidal galaxy | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4618737 — 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: Hercules Dwarf Galaxy Context triple: [Milky Way subgroup, hasMember, Hercules Dwarf Galaxy]
-
A.
Aquarius Dwarf Galaxy
The Aquarius Dwarf Galaxy is a faint, small dwarf irregular galaxy on the outskirts of the Local Group, notable for its low luminosity and sparse stellar population.
-
B.
Draco Dwarf Galaxy
Draco Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way, notable for its high dark matter content and very low rate of star formation.
-
C.
Carina Dwarf Galaxy
The Carina Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the Local Group, notable for its low luminosity and predominantly old stellar population.
-
D.
Cetus Dwarf Galaxy
The Cetus Dwarf Galaxy is a faint, spheroidal dwarf galaxy located in the constellation Cetus and is one of the small satellite members of our cosmic neighborhood.
-
E.
Canis Major Dwarf Galaxy
The Canis Major Dwarf Galaxy is a nearby, faint irregular dwarf galaxy thought to be the closest known satellite galaxy to the Milky Way and currently being tidally disrupted by it.
- 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: Hercules Dwarf Galaxy Target entity description: Hercules Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Hercules and classified as a dwarf spheroidal galaxy.
-
A.
Aquarius Dwarf Galaxy
The Aquarius Dwarf Galaxy is a faint, small dwarf irregular galaxy on the outskirts of the Local Group, notable for its low luminosity and sparse stellar population.
-
B.
Draco Dwarf Galaxy
Draco Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way, notable for its high dark matter content and very low rate of star formation.
-
C.
Carina Dwarf Galaxy
The Carina Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the Local Group, notable for its low luminosity and predominantly old stellar population.
-
D.
Cetus Dwarf Galaxy
The Cetus Dwarf Galaxy is a faint, spheroidal dwarf galaxy located in the constellation Cetus and is one of the small satellite members of our cosmic neighborhood.
-
E.
Canis Major Dwarf Galaxy
The Canis Major Dwarf Galaxy is a nearby, faint irregular dwarf galaxy thought to be the closest known satellite galaxy to the Milky Way and currently being tidally disrupted by it.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf | dwarf spheroidal galaxy ⓘ |
| absoluteMagnitudeV | approximately −6.6 ⓘ |
| alternativeName |
Hercules dSph
ⓘ
Hercules dwarf spheroidal galaxy ⓘ
linked to:
Hercules Dwarf Galaxy
|
| angularSize | approximately 13 arcminutes ⓘ |
| apparentMagnitudeV | approximately 14.7 ⓘ |
| belongsTo |
Milky Way halo
ⓘ
linked to:
Milky Way stellar halo
|
| contains |
RR Lyrae stars
ⓘ
old, metal-poor stars ⓘ variable stars ⓘ |
| darkMatterContent | dark-matter-dominated ⓘ |
| declination | +12° 47′ ⓘ |
| discoveredBy | Sloan Digital Sky Survey ⓘ |
| discoveryMethod |
Sloan Digital Sky Survey imaging
ⓘ
linked to:
Sloan Digital Sky Survey
|
| discoveryYear | 2006 ⓘ |
| distanceFromEarth |
approximately 140 kiloparsecs
ⓘ
approximately 460,000 light-years ⓘ |
| galaxyType | dwarf spheroidal ⓘ |
| gasContent | very little or no gas ⓘ |
| hostGalaxy | Milky Way ⓘ |
| locatedInConstellation | Hercules ⓘ |
| luminosity | very low ⓘ |
| memberOf | Local Group ⓘ |
| metallicity | low ⓘ |
| morphologicalType | dSph ⓘ |
| namedAfter | constellation Hercules ⓘ |
| observedIn |
near-infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| radialVelocity | receding from the Sun ⓘ |
| rightAscension | approximately 16h 31m ⓘ |
| satelliteOf | Milky Way ⓘ |
| shape | elongated ⓘ |
| starFormationActivity | no current star formation ⓘ |
| stellarPopulation | old ⓘ |
| surfaceBrightness | very low ⓘ |
| tidalInteraction | affected by Milky Way tidal forces ⓘ |
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: Hercules Dwarf Galaxy Description of subject: Hercules Dwarf Galaxy is a faint, small satellite galaxy of the Milky Way located in the constellation Hercules and classified as a dwarf spheroidal galaxy.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Hercules Dwarf Galaxy