Aeronomy of Ice in the Mesosphere

Aeronomy of Ice in the Mesosphere
AIM (Explorer 90) spacecraft
NamesExplorer 90
AIM
SMEX
Mission typeAtmospheric research
OperatorNASA
COSPAR ID2007-015A Edit this at Wikidata
SATCAT no.31304
Websiteaim.hamptonu.edu
Mission duration26 months (planned)
15 years and 11 months
(final)
Spacecraft properties
SpacecraftExplorer XC
Spacecraft typeAeronomy of Ice in the Mesosphere
BusLEOStar-2
ManufacturerOrbital Sciences Corporation
Launch mass197 kg (434 lb) [1]
Dimensions1.4 × 1.1 m (4 ft 7 in × 3 ft 7 in)
Start of mission
Launch date25 April 2007, 20:26:03 UTC
RocketPegasus-XL (F38)
Launch siteVandenberg, Stargazer
Runway 12/30
ContractorOrbital Sciences Corporation
Entered service2007
End of mission
DeactivatedMarch 13, 2023
Decay dateAugust 19, 2024
Orbital parameters
Reference systemGeocentric orbit
RegimeSun-synchronous orbit
Perigee altitude552 km (343 mi)
Apogee altitude559 km (347 mi)
Inclination97.90°
Period95.63 minutes
Instruments
Cosmic Dust Experiment (CDE)
Cloud Imaging and Particle Size (CIPS)
Solar Occultation for Ice Experiment (SOFIE)
Explorer program
← THEMIS (Explorer 86-89)
IBEX (Explorer 91) →

The Aeronomy of Ice in the Mesosphere (AIM or Explorer 90) was a NASA satellite launched in 2007 to conduct a planned 26-month study of noctilucent clouds (NLCs).[2] It is the ninetieth Explorer program mission and is part of the NASA-funded Small Explorer program (SMEX).

In March 2023, NASA announced that battery power on the spacecraft had declined below the level needed to sustain operation. The spacecraft reentered Earth's atmosphere in August 2024[3]

  1. ^ ESA. "AIM (Aeronomy of Ice in the Mesosphere)". Archived from the original on 5 August 2020. Retrieved 31 March 2020.
  2. ^ "NASA AIM web page". 6 March 2015. Public Domain This article incorporates text from this source, which is in the public domain.
  3. ^ "NASA's AIM Mission Ends Operational Support". NASA. 16 March 2023. Retrieved 9 September 2023.