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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 19-Dec-2014 16:00 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)      1.081342        0.983931        0.958143
Semidiameter (arcsec)            887.441         975.299        1001.549

HCI longitude                    201.374          11.602         183.485
HCI latitude                       2.401          -1.468           0.534

Carrington longitude              44.069         214.297          26.180
Carrington rotation number      2158.878        2158.405        2157.927

Heliographic (HEEQ) longitude   -170.228          -0.000         171.883
Heliographic (HEEQ) latitude       2.401          -1.468           0.534

HAE longitude                    277.267          87.459         259.290

Earth Ecliptic (HEE) longitude  -170.193          -0.000         171.831
Earth Ecliptic (HEE) latitude     -0.254           0.000           0.088

Roll from ecliptic north           1.470                           0.612
Roll from solar north             -5.280                          -6.626

Light travel time to Earth (min)          17.115          16.112

Separation angle with Earth              170.189         171.831
Separation angle A with B                         17.979


Last Revised: Friday, 19-Dec-2014 11:01:26 EST
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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