STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 12-Jul-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)      1.070855        1.016590        0.961289        0.736224        0.617692        0.828668
Semidiameter (arcsec)            896.132         943.967         998.272        1303.445        1553.571        1158.036

HCI longitude                    275.728         213.977         146.155         237.485         322.542         212.916
HCI latitude                       7.292           4.070          -4.036           3.282           2.649           2.273

Carrington longitude             103.329          41.578         333.756          65.086         150.143          40.517
Carrington rotation number      2232.713        2232.885        2233.073        2232.819        2232.583        2232.887

Heliographic (HEEQ) longitude     61.751          -0.000         -67.822          23.508         108.565          -1.061
Heliographic (HEEQ) latitude       7.292           4.070          -4.036           3.282           2.649           2.273

HAE longitude                    351.447         289.957         221.710         313.266          38.263         288.714

Earth Ecliptic (HEE) longitude    61.491          -0.000         -68.247          23.309         108.307          -1.243
Earth Ecliptic (HEE) latitude      0.076           0.000           0.016          -2.838          -1.765          -1.675

Roll from ecliptic north          -0.039                           0.004
Roll from solar north              0.683                          -6.014

Light travel time to Earth (min)           8.884           9.236                   3.742          11.188           1.588

Separation angle with Earth               61.491          68.247                  23.472         108.298           2.086
Separation angle A with B                        129.738

Carrington rotation 2232 runs from 2020-06-18 01:37 (DOY 170.07) to
2020-07-15 06:24 (DOY 197.27), as seen from Earth.


Last Revised: Saturday, 11-Jul-2020 23:01:08 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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