STEREO - Solar Terrestrial Relations Observatory
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Important notice about reduced STEREO science operations

 

Where is STEREO Today?

Positions of STEREO A and B for 2-Mar-2015 12:00 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)      1.077067        0.991011        0.956894
Semidiameter (arcsec)            890.964         968.332        1002.857

HCI longitude                    263.825          85.570         260.361
HCI latitude                       7.227          -7.231           7.257

Carrington longitude             153.423         335.168         149.959
Carrington rotation number      2160.574        2161.069        2160.583

Heliographic (HEEQ) longitude    178.255           0.000         174.790
Heliographic (HEEQ) latitude       7.227          -7.231           7.257

HAE longitude                    339.640         161.371         336.204

Earth Ecliptic (HEE) longitude   178.269           0.000         174.833
Earth Ecliptic (HEE) latitude      0.016           0.000           0.106

Roll from ecliptic north        -179.457                           1.173
Roll from solar north            179.765                          -0.039

Light travel time to Earth (min)          17.199          16.185

Separation angle with Earth              178.269         174.832
Separation angle A with B                          3.437


Last Revised: Monday, 02-Mar-2015 07:01:51 EST
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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