STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 19-Apr-2014 06:00 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)      1.032994        1.004300        0.958776
Semidiameter (arcsec)            928.977         955.519        1000.888

HCI longitude                    328.762         133.375         289.357
HCI latitude                       4.049          -5.283           6.906

Carrington longitude              38.361         202.974         358.956
Carrington rotation number      2149.893        2149.436        2149.003

Heliographic (HEEQ) longitude   -164.613          -0.000         155.981
Heliographic (HEEQ) latitude       4.049          -5.283           6.906

HAE longitude                     44.294         208.912           4.977

Earth Ecliptic (HEE) longitude  -164.618           0.000         156.065
Earth Ecliptic (HEE) latitude      0.274           0.000           0.061

Roll from ecliptic north          -0.993                           0.139
Roll from solar north              5.203                           2.537

Light travel time to Earth (min)          16.792          15.973

Separation angle with Earth              164.615         156.065
Separation angle A with B                         39.318


Last Revised: Saturday, 19-Apr-2014 02:01:18 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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