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STEREO SCIENCE CENTER

Important notice about reduced STEREO science operations

 

Where is STEREO Today?

Positions of STEREO A and B for 1-Aug-2015 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)      0.999681        1.014965        0.967443
Semidiameter (arcsec)            959.933         945.478         991.922

HCI longitude                     47.147         232.697          58.601
HCI latitude                      -5.168           5.781          -6.323

Carrington longitude             301.307         126.857         312.761
Carrington rotation number      2166.163        2166.648        2167.131

Heliographic (HEEQ) longitude    174.451           0.000        -174.096
Heliographic (HEEQ) latitude      -5.168           5.781          -6.323

HAE longitude                    123.129         308.684         134.579

Earth Ecliptic (HEE) longitude   174.444           0.000        -174.105
Earth Ecliptic (HEE) latitude      0.163           0.000          -0.123

Roll from ecliptic north           1.669                           1.193
Roll from solar north              6.594                           4.964

Light travel time to Earth (min)          16.737          16.466

Separation angle with Earth              174.442         174.104
Separation angle A with B                         11.454


Last Revised: Saturday, 01-Aug-2015 07:02:11 EDT
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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