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 3-Aug-2015 04:00 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)      0.999694        1.014751        0.967420
Semidiameter (arcsec)            959.921         945.678         991.945

HCI longitude                     48.867         234.334          60.372
HCI latitude                      -5.320           5.904          -6.436

Carrington longitude             278.795         104.263         290.301
Carrington rotation number      2166.226        2166.710        2167.194

Heliographic (HEEQ) longitude    174.532          -0.000        -173.962
Heliographic (HEEQ) latitude      -5.320           5.904          -6.436

HAE longitude                    124.848         310.318         136.343

Earth Ecliptic (HEE) longitude   174.530          -0.000        -173.975
Earth Ecliptic (HEE) latitude      0.155          -0.000          -0.123

Roll from ecliptic north           1.618                           1.160
Roll from solar north              6.381                           4.738

Light travel time to Earth (min)          16.736          16.464

Separation angle with Earth              174.527         173.974
Separation angle A with B                         11.499


Last Revised: Monday, 03-Aug-2015 00:02:30 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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