| definition
| - The Earth Probe TOMS (EP-TOMS) spacecraft was launched on July 2, 1996 from a Pegasus XL rocket and placed into a polar orbit with the following characteristics:
Apogee Altitude : 515.2 km
Perigee Altitude : 490.5 km
Orbit Inclination : 97.432 deg.
Period : 94.6 min
The satellite was built by TRW for NASA's Goddard Space Flight Center.
TOMS is part of NASA's Mission to Planet Earth a long term, coordinated research effort to study the Earth as a global environmental system. Using the unique perspective available from space, NASA will observe, monitor and assess large-scale environmental processes, focusing on climate change. MTPE satellite data, complemented by aircraft and ground data, will allow humans to better understand natural environmental changes and to distinguish natural changes from human induced changes. MTPE data, which NASA will distribute to researchers worldwide, is essential to humans making informed decisions about their environment.
The goal of the Total Ozone Mapping Spectrometer (TOMS) Earth Probe mission (part of NASA's Mission To Planet Earth (MTPE) Phase I program) was to continue the high-resolution global mapping of total ozone on a daily basis (begun with the Nimbus 7 SBUV/TOMS) as well as to detect global ozone trends to verify depletion predicted by atmospheric chemistry models.
The TOMS-Earth Probe (TOMS-EP), the first of a series of NASA Earth Probe missions, was one of three TOMS missions which included METEOR 3/TOMS2 (launched 1991) and ADEOS/TOMS (launched 1995). The TOMS-EP carried only one instrument: the Total Ozone Mapping Spectrometer (TOMS).
The TOMS-EP spacecraft was based on the TRW/DSI Eagle bus developed under the USAF STEP program. The spacecraft was three-axis stabilized so that the TOMS instrument was nadir-pointed with about 0.5 degree control and about 0.1 degree knowledge from measured altitude data. The TOMS-EP spacecraft bus was designed to accomodate all of the TOMS instrument requirements to support a two-year lifetime with a three-year lifetime goal.
The EP-TOMS Home Page is located at:
http://eospso.nasa.gov/missions/total-ozone-mapping-spectrometer-earth-probe
Group: Platform_Details
Entry_ID: EP-TOMS
Group: Platform_Identification
Platform_Category: Earth Observation Satellites
Short_Name: EP-TOMS
Long_Name: Earth Probe-TOMS
End_Group
Group: Synonymous_Platform_Names
Short_Name: SMEX/TOMS-Earth Probe
Short_Name: Small Explorer/TOMS-Earth Probe
Short_Name: TOMS-EP96
Short_Name: TOMS-Earth Probe
End_Group
Group: Platform_Associated_Instruments
Short_Name: TOMS
End_Group
Group: Orbit
Orbit_Altitude: 740 km
Orbit_Inclination: 98.385 degrees
Period: 99.6 minutes
Perigee: 490.5 km
Apogee: 515.2 km
Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous
End_Group
Creation_Date: 2007-05-01
Online_Resource: http://eospso.nasa.gov/missions/total-ozone-mapping-spectrometer-earth-probe
Online_Resource: http://science.nasa.gov/missions/toms/
Online_Resource: http://disc.sci.gsfc.nasa.gov/acdisc/TOMS
Online_Resource: https://ozoneaq.gsfc.nasa.gov/missions
Group: Platform_Logistics
Launch_Date: 1996-07-02
Launch_Site: Vandenberg Air Force Base, USA
Design_Life: 2 years
Primary_Sponsor: NASA
End_Group
End_Group (en)
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