Henry Draper Extension
E564027
The Henry Draper Extension is an expanded supplement to the original Henry Draper Catalogue that adds spectral classifications for additional stars beyond those in the initial compilation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Henry Draper Extension canonical | 3 |
| Henry Draper Extension II | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6031389 — 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: Henry Draper Extension Context triple: [Henry Draper Catalogue, hasPart, Henry Draper Extension]
-
A.
Lowell Observatory Foundation
The Lowell Observatory Foundation is a nonprofit organization that manages and supports Lowell Observatory’s astronomical research, education, and public outreach activities.
-
B.
Fred Lawrence Whipple Observatory
The Fred Lawrence Whipple Observatory is a major astronomical research facility in Arizona known for its optical and gamma-ray telescopes used to study the universe.
-
C.
Lowell Observatory
Lowell Observatory is a historic astronomical research institution in Flagstaff, Arizona, renowned for its role in major discoveries including the identification of Pluto.
-
D.
Kirkwood Observatory
Kirkwood Observatory is an astronomical observatory at Indiana University in Bloomington, Indiana, known for its historic telescope and role in teaching and public outreach in astronomy.
-
E.
Goodsell Observatory
Goodsell Observatory is a historic astronomical observatory on the campus of Carleton College in Northfield, Minnesota, known for its distinctive Romanesque architecture and long-standing role in teaching and research in astronomy.
- 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: Henry Draper Extension Target entity description: The Henry Draper Extension is an expanded supplement to the original Henry Draper Catalogue that adds spectral classifications for additional stars beyond those in the initial compilation.
-
A.
Lowell Observatory Foundation
The Lowell Observatory Foundation is a nonprofit organization that manages and supports Lowell Observatory’s astronomical research, education, and public outreach activities.
-
B.
Fred Lawrence Whipple Observatory
The Fred Lawrence Whipple Observatory is a major astronomical research facility in Arizona known for its optical and gamma-ray telescopes used to study the universe.
-
C.
Lowell Observatory
Lowell Observatory is a historic astronomical research institution in Flagstaff, Arizona, renowned for its role in major discoveries including the identification of Pluto.
-
D.
Kirkwood Observatory
Kirkwood Observatory is an astronomical observatory at Indiana University in Bloomington, Indiana, known for its historic telescope and role in teaching and public outreach in astronomy.
-
E.
Goodsell Observatory
Goodsell Observatory is a historic astronomical observatory on the campus of Carleton College in Northfield, Minnesota, known for its distinctive Romanesque architecture and long-standing role in teaching and research in astronomy.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical catalog
ⓘ
stellar catalog ⓘ |
| basedOn | photographic stellar spectra ⓘ |
| catalogs |
faint stars
ⓘ
southern hemisphere stars ⓘ |
| compiledAt | Harvard College Observatory ⓘ |
| contains |
Henry Draper numbers for stars
ⓘ
star positions ⓘ stellar magnitudes ⓘ stellar spectral types ⓘ |
| contributor |
Harvard Computers
ⓘ
linked to:
Harvard Computers program
|
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| dataType | observational astronomy data ⓘ |
| editor |
Annie Jump Cannon
ⓘ
Margaret W. Mayall ⓘ |
| extends | list of stars in Henry Draper Catalogue ⓘ |
| field |
astronomy
ⓘ
astrophysics ⓘ |
| follows | Henry Draper Catalogue ⓘ |
| fundedBy |
Anna Palmer Draper
ⓘ
linked to:
Mary Anna Palmer Draper
Henry Draper Memorial fund ⓘ
linked to:
Henry Draper Memorial
|
| hasPart |
Henry Draper Extension Charts
ⓘ
linked to:
Henry Draper Catalogue
|
| language | English ⓘ |
| medium | printed catalog ⓘ |
| namedAfter | Henry Draper ⓘ |
| partOf |
Henry Draper Catalogue project
ⓘ
linked to:
Henry Draper Catalogue
|
| publisher | Harvard College Observatory ⓘ |
| subject |
stars
ⓘ
stellar spectra ⓘ stellar spectral classification ⓘ |
| timePeriodCovered | early 20th century stellar observations ⓘ |
| usedFor |
Galactic structure research
ⓘ
cross-identification in modern star catalogs ⓘ stellar population studies ⓘ variable star identification ⓘ |
| uses |
Harvard spectral classification system
ⓘ
linked to:
Harvard spectral classification of stars
|
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: Henry Draper Extension Description of subject: The Henry Draper Extension is an expanded supplement to the original Henry Draper Catalogue that adds spectral classifications for additional stars beyond those in the initial compilation.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
HD Catalogue
subject linked to:
HD Catalogue
linked to: Henry Draper Extension
subject linked to:
HD Catalogue
subject linked to:
HD Catalogue
linked to: Henry Draper Extension