STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 1-Jul-2022 23:00 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)      1.086054        1.016700        0.958558        0.686850        1.014646        0.314252
Semidiameter (arcsec)            883.591         943.865        1001.116        1397.144         945.776        3053.693

HCI longitude                    225.358         203.846         178.239         238.662           0.727         312.985
HCI latitude                       5.005           2.948          -0.141           3.317           0.517           2.915

Carrington longitude             282.556         261.043         235.436         295.859          57.924          10.182
Carrington rotation number      2259.215        2259.275        2259.346        2259.178        2258.839        2258.972

Heliographic (HEEQ) longitude     21.512          -0.000         -25.607          34.816         156.881         109.139
Heliographic (HEEQ) latitude       5.005           2.948          -0.141           3.317           0.517           2.915

HAE longitude                    301.339         279.783         254.001         314.442          76.422          28.728

Earth Ecliptic (HEE) longitude    21.557          -0.000         -25.781          34.659         156.639         108.946
Earth Ecliptic (HEE) latitude     -0.170          -0.000           0.080          -2.881           0.607          -2.392

Roll from ecliptic north           0.432                           0.165
Roll from solar north             -4.657                          -7.084

Light travel time to Earth (min)           3.319           3.695                   4.977          16.545           9.627

Separation angle with Earth               21.557          25.781                  34.764         156.632         108.928
Separation angle A with B                         47.339

Carrington rotation 2259 runs from 2022-06-24 11:34 (DOY 175.48) to
2022-07-21 16:24 (DOY 202.68), as seen from Earth.


Last Revised: Friday, 01-Jul-2022 19:01:06 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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