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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 25-Oct-2014 22:00 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)      1.052921        0.994305        0.963398
Semidiameter (arcsec)            911.396         965.124         996.087

HCI longitude                    153.510         316.672         126.402
HCI latitude                      -3.531           4.989          -5.874

Carrington longitude              52.801         215.963          25.693
Carrington rotation number      2156.853        2156.400        2155.929

Heliographic (HEEQ) longitude   -163.161          -0.000         169.730
Heliographic (HEEQ) latitude      -3.531           4.989          -5.874

HAE longitude                    229.060          32.208         201.947

Earth Ecliptic (HEE) longitude  -163.148           0.000         169.739
Earth Ecliptic (HEE) latitude     -0.282           0.000          -0.027

Roll from ecliptic north           0.930                          -0.150
Roll from solar north             -5.557                          -4.446

Light travel time to Earth (min)          16.844          16.218

Separation angle with Earth              163.146         169.739
Separation angle A with B                         27.115


Last Revised: Saturday, 25-Oct-2014 18:01:19 EDT
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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