STEREO - Science Center - Where is STEREO?

Where is STEREO Today?

Positions of STEREO A and B for 14-Oct-2011 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)      1.082899        0.997352        0.967303
Semidiameter (arcsec)            886.165         962.175         992.065

HCI longitude                    205.940         305.536          50.013
HCI latitude                       2.945           5.911          -5.695

Carrington longitude             326.771          66.367         170.844
Carrington rotation number      2116.092        2115.816        2115.525

Heliographic (HEEQ) longitude    -99.595           0.000         104.477
Heliographic (HEEQ) latitude       2.945           5.911          -5.695

HAE longitude                    281.860          21.084         126.016

Earth Ecliptic (HEE) longitude   -99.224          -0.000         104.931
Earth Ecliptic (HEE) latitude     -0.241           0.000          -0.125

Roll from ecliptic north           0.040                          -0.034
Roll from solar north             -6.478                           4.618

Light travel time to Earth (min)          13.187          12.959

Separation angle with Earth               99.224         104.931
Separation angle A with B                        155.842

Last Revised: Friday, 14-Oct-2011 19:01:18 EDT
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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