TIMED

TIMED
TIMED in low Earth orbit
NamesThermosphere • Ionosphere • Mesosphere • Energetics and Dynamics
Mission typeIonosphere
Atmospheric science
Space weather research
OperatorNASA
COSPAR ID2001-055B Edit this at Wikidata
SATCAT no.26998
WebsiteTIMED at APL
Mission durationPlanned: 2 years
Elapsed: 22 years, 11 months, 15 days
Spacecraft properties
ManufacturerApplied Physics Laboratory
Launch mass660 kg (1,460 lb)
Dimensions2.72 meters high
11.73 meters wide
1.2 meters deep
Power406 watts
Start of mission
Launch date7 December 2001, 15:07:35 UTC
RocketDelta II 7920-10
(Delta D289)
Launch siteVandenberg, SLC-2W
Entered service22 January 2002
Orbital parameters
Reference systemGeocentric orbit[1]
RegimeLow Earth orbit
Altitude625 km (388 mi)
Inclination74.1°
Period97.3 minutes
Hinode →

The TIMED (Thermosphere • Ionosphere • Mesosphere • Energetics and Dynamics) mission is dedicated to study the influences that energetics and dynamics of the Sun and humans have on the least explored and understood region of Earth's atmosphere – the Mesosphere and Lower Thermosphere / Ionosphere (MLTI). The mission was launched from Vandenberg Air Force Base in California on 7 December 2001 aboard a Delta II rocket launch vehicle. The project is sponsored and managed by NASA, while the spacecraft was designed and assembled by the Applied Physics Laboratory at Johns Hopkins University. The mission has been extended several times, and has now collected data over an entire solar cycle, which helps in its goal to differentiate the Sun's effects on the atmosphere from other effects.[2] It shared its Delta II launch vehicle with the Jason-1 oceanography mission.

  1. ^ "Trajectory: TIMED 2001-055B". NASA. 14 May 2020. Retrieved 23 November 2020. Public Domain This article incorporates text from this source, which is in the public domain.
  2. ^ Fox, Karen. "Ten Successful Years of Mapping the Middle Atmosphere". NASA. Public Domain This article incorporates text from this source, which is in the public domain.