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 25-Apr-2015 08:00 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)      1.045448        1.005910        0.961318
Semidiameter (arcsec)            917.911         953.990         998.242

HCI longitude                    312.085         139.062         317.265
HCI latitude                       5.625          -4.765           4.937

Carrington longitude             158.090         345.066         163.269
Carrington rotation number      2162.561        2163.041        2162.546

Heliographic (HEEQ) longitude    173.024          -0.000         178.203
Heliographic (HEEQ) latitude       5.625          -4.765           4.937

HAE longitude                     27.603         214.600          32.801

Earth Ecliptic (HEE) longitude   173.003          -0.000         178.201
Earth Ecliptic (HEE) latitude      0.230           0.000           0.003

Roll from ecliptic north        -178.123                           0.098
Roll from solar north           -173.269                           5.418

Light travel time to Earth (min)          17.030          16.360

Separation angle with Earth              172.999         178.201
Separation angle A with B                          5.203


Last Revised: Saturday, 25-Apr-2015 04:01:19 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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