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 24-Jul-2014 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)      1.001188        1.015832        0.966987
Semidiameter (arcsec)            958.489         944.672         992.389

HCI longitude                     63.320         225.329          29.270
HCI latitude                      -6.400           5.172          -3.680

Carrington longitude             207.670           9.679         173.620
Carrington rotation number      2153.423        2152.973        2152.518

Heliographic (HEEQ) longitude   -162.009           0.000         163.941
Heliographic (HEEQ) latitude      -6.400           5.172          -3.680

HAE longitude                    139.265         301.325         105.245

Earth Ecliptic (HEE) longitude  -162.060           0.000         163.920
Earth Ecliptic (HEE) latitude      0.088           0.000          -0.117

Roll from ecliptic north          -0.272                          -0.408
Roll from solar north              2.977                           5.914

Light travel time to Earth (min)          16.571          16.330

Separation angle with Earth              162.060         163.920
Separation angle A with B                         34.020


Last Revised: Thursday, 24-Jul-2014 08:01:19 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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