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STEREO SCIENCE CENTER

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Where is STEREO Today?

Positions of STEREO A and B for 23-Aug-2019 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)      1.028042        1.011282        0.959252
Semidiameter (arcsec)            933.452         948.922        1000.391

HCI longitude                    335.715         254.088         168.101
HCI latitude                       3.281           6.978          -1.439

Carrington longitude              71.378         349.752         263.765
Carrington rotation number      2220.802        2221.028        2221.267

Heliographic (HEEQ) longitude     81.626           0.000         -85.987
Heliographic (HEEQ) latitude       3.281           6.978          -1.439

HAE longitude                     51.275         329.975         243.782

Earth Ecliptic (HEE) longitude    81.299          -0.000         -86.193
Earth Ecliptic (HEE) latitude      0.285           0.000           0.061

Roll from ecliptic north          -0.042                           0.003
Roll from solar north              6.565                          -7.092

Light travel time to Earth (min)          11.050          11.202

Separation angle with Earth               81.300          86.193
Separation angle A with B                        167.488

Carrington rotation 2221 runs from 2019-08-22 21:23 (DOY 234.89) to
2019-09-19 03:33 (DOY 262.15), as seen from Earth.


Last Revised: Friday, 23-Aug-2019 16:01:03 GMT
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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