HMI
E399070
helioseismology instrument
magnetograph
scientific payload
solar observatory instrument
space-based solar telescope instrument
HMI is a key instrument on NASA’s Solar Dynamics Observatory that measures the Sun’s magnetic field and surface oscillations to study solar activity and interior structure.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HMI canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3918732 — 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: HMI Context triple: [Solar Dynamics Observatory, instrumentAbbreviation, HMI]
-
A.
HSI
HSI is the principal investigative arm of the U.S. Department of Homeland Security, responsible for enforcing federal laws related to border security, customs, immigration, and transnational crime.
-
B.
HID
HID (Human Interface Device) is a Bluetooth profile that enables wireless communication between input devices like keyboards, mice, and game controllers and host systems.
-
C.
HART
HART is the public bus transportation system serving the Huntington area, providing local transit services to residents and visitors.
-
D.
HSM
A Hardware Security Module (HSM) is a dedicated, tamper-resistant device used to securely generate, store, and manage cryptographic keys and perform sensitive cryptographic operations.
-
E.
MMI infotainment system
The MMI infotainment system is Audi’s in-car multimedia and control interface that manages navigation, audio, connectivity, and vehicle settings through a central display and controller.
- 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: HMI Target entity description: HMI is a key instrument on NASA’s Solar Dynamics Observatory that measures the Sun’s magnetic field and surface oscillations to study solar activity and interior structure.
-
A.
HSI
HSI is the principal investigative arm of the U.S. Department of Homeland Security, responsible for enforcing federal laws related to border security, customs, immigration, and transnational crime.
-
B.
HID
HID (Human Interface Device) is a Bluetooth profile that enables wireless communication between input devices like keyboards, mice, and game controllers and host systems.
-
C.
HART
HART is the public bus transportation system serving the Huntington area, providing local transit services to residents and visitors.
-
D.
HSM
A Hardware Security Module (HSM) is a dedicated, tamper-resistant device used to securely generate, store, and manage cryptographic keys and perform sensitive cryptographic operations.
-
E.
MMI infotainment system
The MMI infotainment system is Audi’s in-car multimedia and control interface that manages navigation, audio, connectivity, and vehicle settings through a central display and controller.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
helioseismology instrument
ⓘ
magnetograph ⓘ scientific payload ⓘ solar observatory instrument ⓘ space-based solar telescope instrument ⓘ |
| acronymFor | Helioseismic and Magnetic Imager ⓘ |
| collocatedWith | AIA ⓘ |
| dataArchive | Joint Science Operations Center ⓘ |
| dataPolicy | open data ⓘ |
| dataUsedFor |
coronal field extrapolation
ⓘ
flare and CME studies ⓘ helioseismology ⓘ magnetic field modeling ⓘ solar cycle studies ⓘ space weather research ⓘ |
| fieldOfView | full solar disk ⓘ |
| fullName | Helioseismic and Magnetic Imager ⓘ |
| instrumentSuite | SDO payload ⓘ |
| launchDate | 2010-02-11 ⓘ |
| launchSite |
Cape Canaveral Air Force Station
ⓘ
linked to:
Cape Canaveral Space Force Station
|
| launchVehicle | Atlas V 401 ⓘ |
| measures |
Doppler velocity
ⓘ
line-of-sight magnetic field ⓘ photospheric magnetic field ⓘ solar surface oscillations ⓘ vector magnetic field ⓘ |
| missionPhase | operational ⓘ |
| observesFeature |
active regions
ⓘ
solar granulation ⓘ sunspots ⓘ supergranulation ⓘ |
| observesRegion | solar photosphere ⓘ |
| onSpacecraft | Solar Dynamics Observatory ⓘ |
| operatedBy | NASA ⓘ |
| partOfMission |
Solar Dynamics Observatory mission
ⓘ
linked to:
Solar Dynamics Observatory
|
| platformOrbit | geosynchronous-like Earth orbit ⓘ |
| primaryScienceGoal |
measure solar magnetic field
ⓘ
measure solar oscillations ⓘ study solar activity ⓘ study solar interior structure ⓘ |
| primaryScienceTarget | Sun ⓘ |
| provides |
Dopplergrams
ⓘ
continuum intensity images ⓘ full-disk solar images ⓘ magnetograms ⓘ |
| spaceAgency | NASA ⓘ |
| spectralLine | Fe I 6173 Å ⓘ |
| spectralLineType | photospheric iron absorption line ⓘ |
| successorTo |
MDI on SOHO
ⓘ
linked to:
SOHO
|
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: HMI Description of subject: HMI is a key instrument on NASA’s Solar Dynamics Observatory that measures the Sun’s magnetic field and surface oscillations to study solar activity and interior structure.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.