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Where is STEREO Today?

Positions of STEREO A and B for 20-Oct-2020 03:00 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       Parker SP   Solar Orbiter     BepiColombo

Heliocentric distance (AU)      1.008526        0.995749        0.956579        0.603945        0.986037        0.739967
Semidiameter (arcsec)            951.515         963.724        1003.187        1588.932         973.217        1296.852

HCI longitude                      8.887         311.364         251.177         226.410          76.852          37.609
HCI latitude                      -0.846           5.454           6.984           2.828          -6.681          -2.404

Carrington longitude             218.048         160.525         100.339          75.571         286.013         246.770
Carrington rotation number      2236.394        2236.554        2236.721        2236.790        2236.206        2236.315

Heliographic (HEEQ) longitude     57.523           0.000         -60.186         -84.954         125.488          86.245
Heliographic (HEEQ) latitude      -0.846           5.454           6.984           2.828          -6.681          -2.404

HAE longitude                     84.688          26.901         327.088         302.193         152.708         113.393

Earth Ecliptic (HEE) longitude    57.787           0.000         -59.813         -84.708         125.807          86.492
Earth Ecliptic (HEE) latitude      0.281           0.000           0.115          -2.431           0.383           2.029

Roll from ecliptic north          -0.177                           0.069
Roll from solar north              6.987                          -2.265

Light travel time to Earth (min)           8.055           8.101                   9.282          14.674          10.012

Separation angle with Earth               57.787          59.813                  84.713         125.806          86.494
Separation angle A with B                        117.599

Carrington rotation 2236 runs from 2020-10-05 00:05 (DOY 279.00) to
2020-11-01 07:07 (DOY 306.30), as seen from Earth.


Last Revised: Tuesday, 20-Oct-2020 03:01:05 GMT
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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