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 21-Dec-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)      1.082021        0.983771        0.957969
Semidiameter (arcsec)            886.885         975.459        1001.731

HCI longitude                    203.331          13.919         185.879
HCI latitude                       2.636          -1.755           0.841

Carrington longitude              13.521         184.109         356.068
Carrington rotation number      2158.962        2158.489        2158.011

Heliographic (HEEQ) longitude   -170.588          -0.000         171.960
Heliographic (HEEQ) latitude       2.636          -1.755           0.841

HAE longitude                    279.236          89.793         261.704

Earth Ecliptic (HEE) longitude  -170.557          -0.000         171.911
Earth Ecliptic (HEE) latitude     -0.249           0.000           0.091

Roll from ecliptic north           1.496                           0.643
Roll from solar north             -5.160                          -6.570

Light travel time to Earth (min)          17.124          16.110

Separation angle with Earth              170.554         171.910
Separation angle A with B                         17.536


Last Revised: Sunday, 21-Dec-2014 18:01:39 EST
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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