Positions of STEREO A and B for 17-Feb-2026 00:00 UT

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 Orbit Tool
• STEREO orbit simulations
• ... other resources

                                STEREO-B           Earth        STEREO-A       Parker SP   Solar Orbiter     BepiColombo

Heliocentric distance (AU)      1.007046        0.988101        0.960727        0.612553        0.424043        0.319445
Semidiameter (arcsec)            952.914         971.184         998.856        1566.604        2263.042        3004.050

HCI longitude                     10.271          72.062         124.441         262.399         107.900          22.585
HCI latitude                      -1.109          -6.904          -6.018           3.833         -15.242           2.555

Carrington longitude             338.363          40.153          92.533         230.491          75.992         350.677
Carrington rotation number      2308.060        2307.888        2307.743        2308.360        2307.789        2308.026

Heliographic (HEEQ) longitude    -61.791          -0.000          52.379        -169.662          35.838         -49.477
Heliographic (HEEQ) latitude      -1.109          -6.904          -6.018           3.833         -15.242           2.555

HAE longitude                     86.094         147.962         199.990         338.169         183.206          97.888

Earth Ecliptic (HEE) longitude   -61.868          -0.000          52.028        -169.792          35.243         -50.073
Earth Ecliptic (HEE) latitude      0.193           0.000          -0.029          -3.357          -8.332           5.319

Roll from ecliptic north           0.103                           0.019
Roll from solar north              7.238                          -4.074

Light travel time to Earth (min)           8.531           7.112                  13.258           5.756           6.833

Separation angle with Earth               61.868          52.028                 169.260          36.090          50.280
Separation angle A with B                        113.896

Carrington rotation 2307 runs from 2026-01-23 16:59 (DOY  23.71) to
2026-02-20 01:10 (DOY  51.05), as seen from Earth.

Last Revised: Monday, 16-Feb-2026 19:01:12 EST
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