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 1-Sep-2014 23:00 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)      1.016917        1.009087        0.967174
Semidiameter (arcsec)            943.663         950.986         992.198

HCI longitude                    102.673         263.408          70.090
HCI latitude                      -7.187           7.205          -6.939

Carrington longitude              47.330         208.066          14.747
Carrington rotation number      2154.869        2154.422        2153.959

Heliographic (HEEQ) longitude   -160.735           0.000         166.681
Heliographic (HEEQ) latitude      -7.187           7.205          -6.939

HAE longitude                    178.337         339.226         146.007

Earth Ecliptic (HEE) longitude  -160.889           0.000         166.781
Earth Ecliptic (HEE) latitude     -0.110          -0.000          -0.116

Roll from ecliptic north           0.316                          -0.495
Roll from solar north             -1.271                           1.969

Light travel time to Earth (min)          16.617          16.328

Separation angle with Earth              160.889         166.781
Separation angle A with B                         32.330


Last Revised: Monday, 01-Sep-2014 19:01:16 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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