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STEREO SCIENCE CENTER

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Where is STEREO Today?

Positions of STEREO A and B for 17-Oct-2019 01:00 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)      1.001839        0.996783        0.956236
Semidiameter (arcsec)            957.866         962.724        1003.547

HCI longitude                     28.649         307.553         225.118
HCI latitude                      -3.259           5.759           5.279

Carrington longitude              73.035         351.939         269.504
Carrington rotation number      2222.797        2223.022        2223.251

Heliographic (HEEQ) longitude     81.096          -0.000         -82.435
Heliographic (HEEQ) latitude      -3.259           5.759           5.279

HAE longitude                    104.583          23.096         301.125

Earth Ecliptic (HEE) longitude    81.486           0.000         -81.972
Earth Ecliptic (HEE) latitude      0.233          -0.000           0.124

Roll from ecliptic north          -0.036                           0.019
Roll from solar north              6.325                          -5.091

Light travel time to Earth (min)          10.849          10.657

Separation angle with Earth               81.486          81.972
Separation angle A with B                        163.454

Carrington rotation 2223 runs from 2019-10-16 10:20 (DOY 289.43) to
2019-11-12 17:31 (DOY 316.73), as seen from Earth.


Last Revised: Thursday, 17-Oct-2019 01:01:04 GMT
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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