STEREO - Solar Terrestrial Relations Observatory
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Important notice about reduced STEREO science operations

 

Where is STEREO Today?

Positions of STEREO A and B for 24-May-2015 06:00 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)      1.025624        1.012603        0.964207
Semidiameter (arcsec)            935.653         947.684         995.251

HCI longitude                    339.152         166.902         347.280
HCI latitude                       2.883          -1.650           1.542

Carrington longitude             134.990         322.741         143.119
Carrington rotation number      2163.625        2164.103        2164.602

Heliographic (HEEQ) longitude    172.250          -0.000        -179.621
Heliographic (HEEQ) latitude       2.883          -1.650           1.542

HAE longitude                     54.730         242.566          62.955

Earth Ecliptic (HEE) longitude   172.164           0.000        -179.611
Earth Ecliptic (HEE) latitude      0.290           0.000          -0.060

Roll from ecliptic north        -177.896                        -171.199
Roll from solar north           -171.121                        -164.127

Light travel time to Earth (min)          16.913          16.442

Separation angle with Earth              172.159         179.607
Separation angle A with B                          8.232


Last Revised: Sunday, 24-May-2015 02:01:18 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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