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STEREO SCIENCE CENTER

Important notice about reduced STEREO science operations

 

Where is STEREO Today?

Positions of STEREO A and B for 22-May-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)      1.026878        1.012250        0.964027
Semidiameter (arcsec)            934.510         948.014         995.436

HCI longitude                    337.331         165.072         345.302
HCI latitude                       3.095          -1.876           1.791

Carrington longitude             160.357         348.097         168.327
Carrington rotation number      2163.555        2164.033        2164.532

Heliographic (HEEQ) longitude    172.260          -0.000        -179.770
Heliographic (HEEQ) latitude       3.095          -1.876           1.791

HAE longitude                     52.899         240.723          60.961

Earth Ecliptic (HEE) longitude   172.177           0.000        -179.761
Earth Ecliptic (HEE) latitude      0.288          -0.000          -0.056

Roll from ecliptic north        -177.907                        -166.730
Roll from solar north           -171.218                        -159.717

Light travel time to Earth (min)          16.920          16.437

Separation angle with Earth              172.172         179.755
Separation angle A with B                          8.069


Last Revised: Friday, 22-May-2015 04:01:21 EDT
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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