MODIS/Aqua Near Real Time (NRT) 24-hour Spacecraft ephemeris/orbit data files to be read via SDP Toolkit Binary Format

PM1EPHND is the Aqua Near Real Time (NRT) daily spacecraft definitive ephemeris data file in native format. This is MODIS Ancillary Data. The data collection consists of PM1 Platform Attitude Data that has been preprocessed by ECS to an internal standard supported by the ECS SDP Toolkit. This data is typically used in determining the geolocation of earth remote sensing observations.The file name format is the following:PM1EPHND_NRT.Ayyyyddd.hhmm.vvv where from left to right: PM1 = PM1 (Aqua); EPH = Spacecraft Ephemeris; N = Native format; D = Definitive; A = Acquisition; yyyy = data year, ddd = Julian data day, hh = data hour, mm = data minute; vvv = Version ID.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated May 11, 2026, 21:11 (UTC)
Created May 19, 2025, 04:05 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id f2e9c32e-0518-4f7b-8e91-be3a9ec03371
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/MODIS/PM1EPHND_NRT.006
license https://www.usa.gov/government-works
modified 2026-05-04T22:16:00Z
programCode {026:000}
publisher NASA/GSFC/EOS/ESDIS/LANCEMODIS
resource-type Dataset
source_datajson_identifier true
source_hash b917562b9a8ba49ac4768c543e9689881c36d9f358b7ce66614f0fa9d67fb06e
source_schema_version 1.1
spatial ["CARTESIAN",[{"WestBoundingCoordinate":-180.0,"NorthBoundingCoordinate":90.0,"EastBoundingCoordinate":180.0,"SouthBoundingCoordinate":-90.0}]]
theme {"Earth Science"}