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 29-Aug-2015 00:00 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)      1.004161        1.010036        0.966452
Semidiameter (arcsec)            955.652         950.093         992.939

HCI longitude                     74.881         259.297          87.257
HCI latitude                      -6.974           7.127          -7.341

Carrington longitude             298.379         122.795         310.755
Carrington rotation number      2167.171        2167.659        2168.137

Heliographic (HEEQ) longitude    175.583           0.000        -172.041
Heliographic (HEEQ) latitude      -6.974           7.127          -7.341

HAE longitude                    150.761         335.147         163.045

Earth Ecliptic (HEE) longitude   175.614           0.000        -172.102
Earth Ecliptic (HEE) latitude      0.029          -0.000          -0.098

Roll from ecliptic north           0.382                           0.701
Roll from solar north              2.269                           1.048

Light travel time to Earth (min)          16.740          16.400

Separation angle with Earth              175.614         172.101
Separation angle A with B                         12.285


Last Revised: Friday, 28-Aug-2015 20:02:21 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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