STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 20-Jun-2019 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)      1.070217        1.016136        0.965423
Semidiameter (arcsec)            896.667         944.389         993.997

HCI longitude                    276.729         192.487         100.837
HCI latitude                       7.284           1.579          -7.200

Carrington longitude             206.695         122.453          30.803
Carrington rotation number      2218.426        2218.660        2218.914

Heliographic (HEEQ) longitude     84.242          -0.000         -91.650
Heliographic (HEEQ) latitude       7.284           1.579          -7.200

HAE longitude                    352.440         268.351         176.516

Earth Ecliptic (HEE) longitude    84.090          -0.000         -91.835
Earth Ecliptic (HEE) latitude      0.081          -0.000          -0.077

Roll from ecliptic north          -0.006                          -0.000
Roll from solar north              0.842                          -1.360

Light travel time to Earth (min)          11.626          11.843

Separation angle with Earth               84.090          91.835
Separation angle A with B                        175.924

Carrington rotation 2218 runs from 2019-06-02 06:15 (DOY 153.26) to
2019-06-29 11:01 (DOY 180.46), as seen from Earth.


Last Revised: Thursday, 20-Jun-2019 01:01:04 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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