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STEREO SCIENCE CENTER

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Where is STEREO Today?

Positions of STEREO A and B for 23-May-2019 13:00 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)      1.081777        1.012451        0.967028
Semidiameter (arcsec)            887.085         947.826         992.347

HCI longitude                    252.536         166.204          71.972
HCI latitude                       6.880          -1.736          -7.015

Carrington longitude             214.938         128.606          34.374
Carrington rotation number      2217.403        2217.643        2217.905

Heliographic (HEEQ) longitude     86.332          -0.000         -94.232
Heliographic (HEEQ) latitude       6.880          -1.736          -7.015

HAE longitude                    328.432         241.863         147.878

Earth Ecliptic (HEE) longitude    86.568          -0.000         -93.986
Earth Ecliptic (HEE) latitude     -0.041           0.000          -0.114

Roll from ecliptic north           0.005                           0.006
Roll from solar north             -2.166                           2.244

Light travel time to Earth (min)          11.950          12.042

Separation angle with Earth               86.568          93.986
Separation angle A with B                        179.424

Carrington rotation 2217 runs from 2019-05-06 01:04 (DOY 126.04) to
2019-06-02 06:15 (DOY 153.26), as seen from Earth.


Last Revised: Thursday, 23-May-2019 13:01:03 GMT
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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