STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 20-Nov-2019 01:00 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)      1.001160        0.988208        0.956958
Semidiameter (arcsec)            958.516         971.079        1002.790

HCI longitude                     62.806         341.498         261.214
HCI latitude                      -6.369           2.310           7.273

Carrington longitude             344.923         263.615         183.332
Carrington rotation number      2224.042        2224.268        2224.491

Heliographic (HEEQ) longitude     81.308           0.000         -80.283
Heliographic (HEEQ) latitude      -6.369           2.310           7.273

HAE longitude                    138.753          57.125         337.052

Earth Ecliptic (HEE) longitude    81.628           0.000         -80.074
Earth Ecliptic (HEE) latitude      0.090           0.000           0.105

Roll from ecliptic north          -0.015                           0.021
Roll from solar north              3.292                          -1.084

Light travel time to Earth (min)          10.815          10.409

Separation angle with Earth               81.628          80.074
Separation angle A with B                        161.701

Carrington rotation 2224 runs from 2019-11-12 17:31 (DOY 316.73) to
2019-12-10 01:03 (DOY 344.04), as seen from Earth.


Last Revised: Tuesday, 19-Nov-2019 20:01:02 EST
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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