STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 26-Jan-2020 05:00 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

Heliocentric distance (AU)      1.034466        0.984509        0.962782
Semidiameter (arcsec)            927.655         974.727         996.724

HCI longitude                    128.822          49.423         331.978
HCI latitude                      -5.880          -5.522           3.391

Carrington longitude             178.220          98.821          21.376
Carrington rotation number      2226.505        2226.725        2226.941

Heliographic (HEEQ) longitude     79.399           0.000         -77.445
Heliographic (HEEQ) latitude      -5.880          -5.522           3.391

HAE longitude                    204.346         125.416          47.556

Earth Ecliptic (HEE) longitude    78.930           0.000         -77.860
Earth Ecliptic (HEE) latitude     -0.219          -0.000          -0.028

Roll from ecliptic north           0.041                          -0.005
Roll from solar north             -4.498                           6.393

Light travel time to Earth (min)          10.678          10.178

Separation angle with Earth               78.930          77.860
Separation angle A with B                        156.789

Carrington rotation 2226 runs from 2020-01-06 08:57 (DOY   6.37) to
2020-02-02 17:08 (DOY  33.71), as seen from Earth.


Last Revised: Sunday, 26-Jan-2020 00:01:05 EST
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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