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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 7-Jul-2015 15:00 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)      1.003473        1.016681        0.967170
Semidiameter (arcsec)            956.307         943.883         992.202

HCI longitude                     22.305         209.017          32.939
HCI latitude                      -2.513           3.534          -4.081

Carrington longitude             268.711          95.423         279.345
Carrington rotation number      2165.254        2165.735        2166.224

Heliographic (HEEQ) longitude    173.287           0.000        -176.078
Heliographic (HEEQ) latitude      -2.513           3.534          -4.081

HAE longitude                     98.203         284.979         108.929

Earth Ecliptic (HEE) longitude   173.224          -0.000        -176.050
Earth Ecliptic (HEE) latitude      0.252           0.000          -0.121

Roll from ecliptic north           2.116                           1.747
Roll from solar north              8.822                           7.828

Light travel time to Earth (min)          16.773          16.490

Separation angle with Earth              173.220         176.048
Separation angle A with B                         10.732


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