STEREO - Solar Terrestrial Relations Observatory
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Important notice about reduced STEREO science operations

 

Where is STEREO Today?

Positions of STEREO A and B for 6-Jul-2015 00:00 UT

Plot of spacecraft positions

This figure plots the current positions of the STEREO Ahead (red) and Behind (blue) spacecraft relative to the Sun (yellow) and Earth (green). The dotted lines show the angular displacement from the Sun. Units are in A.U.

When the two spacecraft are close to Earth, an expanded view of the region around Earth will appear on the right, in the same orientation as the Sun-centered view.

Other resources:



                                STEREO-B           Earth        STEREO-A

Heliocentric distance (AU)      1.003970        1.016681        0.967114
Semidiameter (arcsec)            955.833         943.883         992.260

HCI longitude                     20.693         207.475          31.266
HCI latitude                      -2.319           3.362          -3.901

Carrington longitude             290.148         116.931         300.721
Carrington rotation number      2165.194        2165.675        2166.165

Heliographic (HEEQ) longitude    173.218           0.000        -176.209
Heliographic (HEEQ) latitude      -2.319           3.362          -3.901

HAE longitude                     96.581         283.430         107.249

Earth Ecliptic (HEE) longitude   173.151           0.000        -176.180
Earth Ecliptic (HEE) latitude      0.256           0.000          -0.120

Roll from ecliptic north           2.128                           1.792
Roll from solar north              8.910                           7.986

Light travel time to Earth (min)          16.776          16.491

Separation angle with Earth              173.146         176.179
Separation angle A with B                         10.675


Last Revised: Sunday, 05-Jul-2015 20:01:34 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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