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 17-Sep-2014 15:00 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)      1.026607        1.005073        0.966484
Semidiameter (arcsec)            934.756         954.784         992.906

HCI longitude                    117.866         278.747          86.411
HCI latitude                      -6.596           7.168          -7.336

Carrington longitude             200.302           1.183         168.847
Carrington rotation number      2155.444        2154.997        2154.531

Heliographic (HEEQ) longitude   -160.881           0.000         167.664
Heliographic (HEEQ) latitude      -6.596           7.168          -7.336

HAE longitude                    193.432         354.444         162.207

Earth Ecliptic (HEE) longitude  -161.012           0.000         167.762
Earth Ecliptic (HEE) latitude     -0.178          -0.000          -0.098

Roll from ecliptic north           0.514                          -0.454
Roll from solar north             -2.868                          -0.001

Light travel time to Earth (min)          16.667          16.305

Separation angle with Earth              161.011         167.762
Separation angle A with B                         31.225


Last Revised: Wednesday, 17-Sep-2014 11:01:16 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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