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STEREO SCIENCE CENTER

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Where is STEREO Today?

Positions of STEREO A and B for 17-Oct-2019 00:00 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)      1.001848        0.996795        0.956236
Semidiameter (arcsec)            957.857         962.713        1003.547

HCI longitude                     28.607         307.511         225.074
HCI latitude                      -3.255           5.763           5.275

Carrington longitude              73.585         352.489         270.051
Carrington rotation number      2222.796        2223.021        2223.250

Heliographic (HEEQ) longitude     81.096          -0.000         -82.438
Heliographic (HEEQ) latitude      -3.255           5.763           5.275

HAE longitude                    104.541          23.055         301.081

Earth Ecliptic (HEE) longitude    81.486           0.000         -81.974
Earth Ecliptic (HEE) latitude      0.233           0.000           0.124

Roll from ecliptic north          -0.036                           0.019
Roll from solar north              6.327                          -5.095

Light travel time to Earth (min)          10.850          10.657

Separation angle with Earth               81.486          81.974
Separation angle A with B                        163.456

Carrington rotation 2223 runs from 2019-10-16 10:20 (DOY 289.43) to
2019-11-12 17:31 (DOY 316.73), as seen from Earth.


Last Revised: Thursday, 17-Oct-2019 00:01:02 GMT
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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