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Where is STEREO Today?

Positions of STEREO A and B for 17-Apr-2014 04:00 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)      1.034429        1.003714        0.958601
Semidiameter (arcsec)            927.689         956.077        1001.071

HCI longitude                    326.807         131.338         287.152
HCI latitude                       4.255          -5.457           6.997

Carrington longitude              65.957         230.488          26.301
Carrington rotation number      2149.817        2149.360        2148.927

Heliographic (HEEQ) longitude   -164.531           0.000         155.814
Heliographic (HEEQ) latitude       4.255          -5.457           6.997

HAE longitude                     42.333         206.876           2.786

Earth Ecliptic (HEE) longitude  -164.542           0.000         155.910
Earth Ecliptic (HEE) latitude      0.270           0.000           0.065

Roll from ecliptic north          -0.974                           0.147
Roll from solar north              5.089                           2.281

Light travel time to Earth (min)          16.798          15.962

Separation angle with Earth              164.540         155.910
Separation angle A with B                         39.548


Last Revised: Thursday, 17-Apr-2014 00:01:16 EDT
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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