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STEREO SCIENCE CENTER

Important notice about reduced STEREO science operations

 

Where is STEREO Today?

Positions of STEREO A and B for 18-Sep-2014 13:00 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)      1.027211        1.004829        0.966432
Semidiameter (arcsec)            934.207         955.016         992.960

HCI longitude                    118.745         279.649          87.368
HCI latitude                      -6.547           7.150          -7.342

Carrington longitude             188.178         349.082         156.801
Carrington rotation number      2155.477        2155.030        2154.564

Heliographic (HEEQ) longitude   -160.904           0.000         167.719
Heliographic (HEEQ) latitude      -6.547           7.150          -7.342

HAE longitude                    194.306         355.339         163.155

Earth Ecliptic (HEE) longitude  -161.033           0.000         167.816
Earth Ecliptic (HEE) latitude     -0.181          -0.000          -0.097

Roll from ecliptic north           0.525                          -0.450
Roll from solar north             -2.955                          -0.118

Light travel time to Earth (min)          16.670          16.303

Separation angle with Earth              161.032         167.816
Separation angle A with B                         31.151


Last Revised: Thursday, 18-Sep-2014 09:01:18 EDT
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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