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Where is STEREO Today?

Positions of STEREO A and B for 24-Apr-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)      1.029146        1.005876        0.959275
Semidiameter (arcsec)            932.450         954.022        1000.368

HCI longitude                    334.102         138.902         295.347
HCI latitude                       3.464          -4.780           6.609

Carrington longitude             323.323         128.122         284.567
Carrington rotation number      2150.102        2149.644        2149.210

Heliographic (HEEQ) longitude   -164.800          -0.000         156.445
Heliographic (HEEQ) latitude       3.464          -4.780           6.609

HAE longitude                     49.654         214.439          10.932

Earth Ecliptic (HEE) longitude  -164.785          -0.000         156.493
Earth Ecliptic (HEE) latitude      0.283           0.000           0.049

Roll from ecliptic north          -1.039                           0.115
Roll from solar north              5.482                           3.212

Light travel time to Earth (min)          16.777          16.002

Separation angle with Earth              164.782         156.493
Separation angle A with B                         38.723


Last Revised: Thursday, 24-Apr-2014 18:01:17 EDT
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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