Official name SNOE
Alternative name SNOE
Cospar ID 1998-012A
Norad ID 25233
Launch date 1998-02-26
Launch site WRAS
Launch vehicle Pegasus-XL
Country/Organization USA
Type application Atmospheric science
Operator University of Colorado Boulder's Laboratory for Atmospheric and Space Physics (LASP), NASA
RCS size MEDIUM
Decay date 2003-12-13
Shape Hex Cyl
Mass (kg) 113.97
Diameter (m) 0.99
Height (m) 0.91
Span (m^2) 0.99
Contractors University of Colorado Boulder's Laboratory for Atmospheric and Space Physics (LASP)
Equipment UV spectrometer, auroral photometer, soft X-ray photometer
Propulsion ?
Configuration Hexagonal prism, spin stabilized
Power Solar cells, batteries

SNOE (Student Nitric Oxide Explorer) was a small STEDI class Explorer mission designed and built at the University of Colorado Boulder's Laboratory for Atmospheric and Space Physics (LASP) to measure nitric oxide density in the terrestrial lower thermosphere (100-200 km altitude) and analyze the energy inputs to that region from the sun and magnetosphere that create it and cause its abundance to vary dramatically. It carries three instruments:

  • an ultraviolet spectrometer to measure nitric oxide altitude profiles,
  • a two-channel auroral photometer to measure auroral emissions beneath the spacecraft,
  • a five-channel solar soft X-ray photometer.

SNOE is one of three satellite projects selected for the Student Explorer Demonstration Initiative program (STEDI). STEDI is funded by NASA and managed by the Universities Space Research Association (USRA).

Satellite COSPAR Date LS Launch Vehicle Remarks
SNOE 1998-012A 1998-02-26 WRAS Pegasus-XL with BATSAT