astronomy
951 abbreviations
| Abbreviation | Meaning | |
|---|---|---|
| IDP | (celestial object) Interplanetary Dust Particle, dust particles around planets or planetary bodies | |
| IDS | (catalog) Index catalog of Double Stars | |
| IEO | (astrophysics terminology) Inner-Earth Object, the orbits of asteroids | |
| IERS | (organization) International Earth Rotation geophysical Service or International Earth rotation and Reference systems Service, an organization that monitors the Earth's orientation with respect to the radio sources used to define the ICRF | |
| IfA | (organization) Institute for Astronomy, the astronomy research division of the University of Hawaii | |
| IGM | (celestial object) InterGalactic Medium | |
| IGR | (catalog) Integral Gamma-Ray source, a catalog based on observations by the INTEGRAL telescope | |
| IGY | (observing program) International Geophysical Year, the name given to a series of coordinated geophysical and astronomical observation programs performed in 1957 and 1958 | |
| IHW | (organization) International Halley Watch, an organization created to coordinate observations of Halley's Comet in 1986 | |
| ILOM | (spacecraft) In-situ Lunar Orientation Measurement, a mission to measure variations in the orientation of the Moon from the Moon's surface | |
| IMBH | (celestial object) Intermediate Mass Black Hole | |
| IMF | (astrophysics terminology) Initial Mass Function, the relative numbers of stars of different masses that form during star formation | |
| IMO | (organization) International Meteor Organization | |
| IMPACT | (meeting) International Monitoring Programs for Asteroid and Comet Threat | |
| IMPS | (observing program) IRAS Minor Planet Survey | |
| INAG | (organization) Institut National d'Astronomie et de Geophysique | |
| ING | (organization) Isaac Newton Group of Telescopes | |
| INS | (celestial object) Isolated Neutron Star | |
| INT | (telescope) Isaac Newton Telescope | |
| INTEGRAL | (telescope) INTErnational Gamma-Ray Astrophysics Laboratory, a gamma-ray space telescope | |
| IoA | (organization) Institute of Astronomy, an astronomy research department at Cambridge University | |
| IOTA | (telescope) Infrared Optical Telescope Array | |
| IOTA | (organization) International Occultation Timing Association, an organization for monitoring occultations | |
| IPAC | (organization) Infrared Processing & Analysis Center | |
| IPMO | (celestial object) Isolated Planetary Mass Objects, another name for isolated planemos or sub-brown dwarfs | |
| IQSY | (observing program) International Quiet Sun Year, the name given to a series of coordinated Sun-related observational programs performed in 1964 and 1965 | |
| IR | (astrophysics terminology) InfraRed | |
| IRAC | (instrumentation) Infrared Array Camera, a mid-infrared imager on the Spitzer Space Telescope | |
| IRAF | (software) Image Reduction and Analisys Facility, a general-purpose professional data-processing package | |
| IRAIT | (telescope) International Robotic Antarctic Infrared Telescope | |
| IRAM | (organization) Institut de Radio Astronomie Millimetrique | |
| IRAS | (telescope/catalog) InfraRed Astronomical Satellite, an infrared space telescope; also the catalog produced using the telescope's data | |
| IRCS | (instrumentation) InfraRed Camera and Spectrograph, an instrument on the Subaru Telescope | |
| IRDC | (celestial object) Infrared Dark Cloud | |
| IRS | (instrumentation) InfraRed Spectrograph, an infrared spectrometer on the Spitzer Space Telescope | |
| IRSA | (organization) Infrared Science Archive | |
| IRTF | (telescope) InfraRed Telescope Facility | |
| IRX | (astrophysical terminology) InfraRed Excess | |
| ISAS | (organization) Institute of Space and Astronautical Science | |
| ISAS | (organization) Institute of Space and Atmospheric Studies, a research unit at the University of Saskatchewan | |
| ISEE | (spacecraft) International Sun-Earth Explorer, a series of spacecraft designed to study the effects of the Sun on the Earth's space environment and magnetosphere | |
| ISGRI | (instrumentation) INTEGRAL Soft Gamma-Ray Imager, an instrument on the INTEGRAL satellite | |
| ISM | (celestial object) InterStellar Medium | |
| ISN | (organization) International Supernovae Network | |
| ISO | (telescope) Infrared Space Observatory | |
| ISPM | (spacecraft) International Solar Polar Mission, another name for the Ulysses spacecraft | |
| ISSA | (data) Infrared Sky Survey Atlas, an atlas compiled from Infrared Astronomical Satellite data | |
| ISTeC | (organization) International Small Telescope Cooperative | |
| ISY | (observing program/meeting) International Space Year, the name given to a celebration of space exploration as well as a series of coordinated astronomical observations and a series of meetings to plan future astronomy research efforts | |
| ITA | (organization) Institute of Theoretical Astronomy, one of three organizations that was combined to form the Institute of Astronomy |