STEREO - Solar Terrestrial Relations Observatory
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Important notice about STEREO Behind

 

Where is STEREO Today?

Positions of STEREO A and B for 30-Jul-2016 01:00 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)      1.003629        1.015223        0.966893
Semidiameter (arcsec)            956.157         945.238         992.486

HCI longitude                     21.757         231.089          78.371
HCI latitude                      -2.448           5.656          -7.213

Carrington longitude             158.629           7.962         215.243
Carrington rotation number      2179.559        2179.978        2180.402

Heliographic (HEEQ) longitude    150.668           0.000        -152.718
Heliographic (HEEQ) latitude      -2.448           5.656          -7.213

HAE longitude                     97.652         307.080         154.230

Earth Ecliptic (HEE) longitude   150.572           0.000        -152.850
Earth Ecliptic (HEE) latitude      0.253           0.000          -0.108

Roll from ecliptic north           0.448                           0.208
Roll from solar north              7.181                           1.667

Light travel time to Earth (min)          16.241          16.026

Separation angle with Earth              150.571         152.850
Separation angle A with B                         56.579


Last Revised: Friday, 29-Jul-2016 21:01:55 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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