STEREO - Science Center - Where is STEREO?

Where is STEREO Today?

Positions of STEREO A and B for 22-May-2013 12:00 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)      1.002936        1.012339        0.959940
Semidiameter (arcsec)            956.818         947.931         999.674

HCI longitude                     24.186         165.716         302.873
HCI latitude                      -2.738          -1.797           6.134

Carrington longitude             119.460         260.990          38.146
Carrington rotation number      2137.668        2137.275        2136.894

Heliographic (HEEQ) longitude   -141.530          -0.000         137.156
Heliographic (HEEQ) latitude      -2.738          -1.797           6.134

HAE longitude                    100.096         241.372          18.427

Earth Ecliptic (HEE) longitude  -141.276           0.000         137.055
Earth Ecliptic (HEE) latitude      0.246           0.000           0.035

Roll from ecliptic north          -0.307                           0.039
Roll from solar north              6.305                           3.967

Light travel time to Earth (min)          15.814          15.266

Separation angle with Earth              141.275         137.055
Separation angle A with B                         81.669

Last Revised: Wednesday, 22-May-2013 08:01:17 EDT
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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