STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 19-Mar-2024 06:00 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)      1.010128        0.995623        0.962308        0.411373        0.444500        0.574536
Semidiameter (arcsec)            950.006         963.846         997.215        2332.744        2158.894        1670.267

HCI longitude                     87.864         103.130         112.113         281.201         100.329         156.764
HCI latitude                      -7.243          -7.064          -6.777           3.773          -7.476          -3.264

Carrington longitude             261.490         276.756         285.739          94.827         273.954         330.390
Carrington rotation number      2282.274        2282.231        2282.206        2281.737        2282.239        2282.082

Heliographic (HEEQ) longitude    -15.266          -0.000           8.983         178.071          -2.802          53.634
Heliographic (HEEQ) latitude      -7.243          -7.064          -6.777           3.773          -7.476          -3.264

HAE longitude                    163.647         178.795         187.717         356.962         176.006         232.317

Earth Ecliptic (HEE) longitude   -15.147          -0.000           8.922         178.167          -2.789          53.522
Earth Ecliptic (HEE) latitude      0.005          -0.000          -0.054          -3.341          -0.341          -0.390

Roll from ecliptic north           0.014                           0.341
Roll from solar north              0.284                          -2.383

Light travel time to Earth (min)           2.202           1.296                  11.697           4.592           6.660

Separation angle with Earth               15.147           8.922                 176.190           2.810          53.523
Separation angle A with B                         24.070

Carrington rotation 2282 runs from 2024-03-12 22:25 (DOY  72.93) to
2024-04-09 05:32 (DOY 100.23), as seen from Earth.


Last Revised: Tuesday, 19-Mar-2024 02:01:05 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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