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 20-Aug-2014 16:00 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)      1.010446        1.011808        0.967418
Semidiameter (arcsec)            949.707         948.428         991.948

HCI longitude                     90.544         251.456          57.327
HCI latitude                      -7.302           6.880          -6.238

Carrington longitude             209.551          10.463         176.334
Carrington rotation number      2154.418        2153.971        2153.510

Heliographic (HEEQ) longitude   -160.912          -0.000         165.871
Heliographic (HEEQ) latitude      -7.302           6.880          -6.238

HAE longitude                    166.305         327.360         133.310

Earth Ecliptic (HEE) longitude  -161.055          -0.000         165.950
Earth Ecliptic (HEE) latitude     -0.050           0.000          -0.123

Roll from ecliptic north           0.144                          -0.492
Roll from solar north              0.076                           3.415

Light travel time to Earth (min)          16.590          16.338

Separation angle with Earth              161.055         165.949
Separation angle A with B                         32.995


Last Revised: Wednesday, 20-Aug-2014 12:01:18 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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