TRACKER-1
48.8566°N / 2.3522°E
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SO
Space probes·NASA

Solar Dynamics Observatory

ActiveLaunched in 2010·Inclined geosynchronous orbit

A solar observatory imaging the Sun continuously in ten wavelengths, producing an image every 0.75 seconds to track magnetic activity.

Main objectives
  • Continuously observe the Sun’s magnetic activity.
  • Understand solar variability and its impact on Earth.
  • Feed space-weather forecasting.
Did you know?

SDO downlinks 1.5 terabytes of data per day — enough to fill a hard drive with 500 movies daily.

Timeline

Feb 11, 2010
Launch

Atlas V lift-off from Cape Canaveral.

Mar 12, 2012
Flare filmed

Capture of a major solar flare and its shock wave.

Feb 11, 2020
10 years observing

A decade of continuous monitoring of solar activity.

Solar Dynamics Observatory
Photo of Solar Dynamics Observatory
Mission data
StatusActive
PositionInclined geosynchronous orbit
Launched in2010
TargetSun
Budget0.85B USD

Instruments

[03]
AIA

Atmospheric imager in 10 EUV/UV wavelengths.

HMI

Measures the magnetic field and surface motions.

EVE

Extreme-UV irradiance spectrometer.

Specifications

Mass3,100 kg
OrbitInclined geosynchronous orbit
CadenceOne image / 0.75 s

Discoveries

[01]

Mission milestones

[01]
  • Milestone
    10 years observing
    A decade of continuous monitoring of solar activity.
    Feb 11, 2020

Official sources

NASA SDO↗