STEREO - Solar Terrestrial Relations Observatory
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Important notice about STEREO Behind

 

Where is STEREO Today?

Positions of STEREO A and B for 12-Feb-2016 11:00 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)      1.086102        0.987102        0.957002
Semidiameter (arcsec)            883.552         972.167        1002.743

HCI longitude                    227.603          67.008         262.908
HCI latitude                       5.209          -6.682           7.300

Carrington longitude             235.805          75.210         271.110
Carrington rotation number      2173.345        2173.791        2174.247

Heliographic (HEEQ) longitude    160.595          -0.000        -164.100
Heliographic (HEEQ) latitude       5.209          -6.682           7.300

HAE longitude                    303.584         142.939         338.732

Earth Ecliptic (HEE) longitude   160.646           0.000        -164.207
Earth Ecliptic (HEE) latitude     -0.161           0.000           0.103

Roll from ecliptic north          -0.456                          -0.363
Roll from solar north             -5.338                          -1.256

Light travel time to Earth (min)          16.999          16.016

Separation angle with Earth              160.645         164.207
Separation angle A with B                         35.148


Last Revised: Friday, 12-Feb-2016 06:01:22 EST
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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