STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 2-Mar-2024 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)      1.003800        0.991322        0.964160        0.659309        0.649998        0.496327
Semidiameter (arcsec)            955.995         968.028         995.299        1455.506        1476.354        1933.458

HCI longitude                     71.587          86.732          95.026         263.712          63.564         121.566
HCI latitude                      -6.827          -7.241          -7.309           3.839          -4.298          -3.147

Carrington longitude             116.301         131.445         139.739         308.425         108.277         166.280
Carrington rotation number      2281.677        2281.635        2281.612        2281.143        2281.699        2281.538

Heliographic (HEEQ) longitude    -15.144           0.000           8.294         176.980         -23.168          34.835
Heliographic (HEEQ) latitude      -6.827          -7.241          -7.309           3.839          -4.298          -3.147

HAE longitude                    147.488         162.523         170.751         339.481         139.389         197.329

Earth Ecliptic (HEE) longitude   -15.035           0.000           8.227         176.958         -23.135          34.805
Earth Ecliptic (HEE) latitude      0.059           0.000          -0.085          -3.370           2.201           3.033

Roll from ecliptic north           0.216                           0.584
Roll from solar north              2.501                          -0.050

Light travel time to Earth (min)           2.173           1.188                  13.718           3.910           5.404

Separation angle with Earth               15.035           8.228                 175.461          23.233          34.921
Separation angle A with B                         23.263

Carrington rotation 2281 runs from 2024-02-14 14:30 (DOY  45.60) to
2024-03-12 22:25 (DOY  72.93), as seen from Earth.


Last Revised: Saturday, 02-Mar-2024 18:01:05 EST
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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