STEREO - Solar Terrestrial Relations Observatory
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Important notice about STEREO Behind

 

Where is STEREO Today?

Positions of STEREO A and B for 25-Sep-2018 14:00 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)      1.001296        1.002826        0.958211
Semidiameter (arcsec)            958.386         956.923        1001.478

HCI longitude                     31.225         286.559         181.088
HCI latitude                      -3.551           6.954           0.226

Carrington longitude             157.291          52.625         307.154
Carrington rotation number      2208.563        2208.854        2209.147

Heliographic (HEEQ) longitude    104.666           0.000        -105.471
Heliographic (HEEQ) latitude      -3.551           6.954           0.226

HAE longitude                    107.171           2.199         256.874

Earth Ecliptic (HEE) longitude   104.972           0.000        -105.326
Earth Ecliptic (HEE) latitude      0.224           0.000           0.084

Roll from ecliptic north           0.059                          -0.024
Roll from solar north              6.256                          -7.274

Light travel time to Earth (min)          13.222          12.970

Separation angle with Earth              104.972         105.326
Separation angle A with B                        149.701

Carrington rotation 2208 runs from 2018-09-02 07:16 (DOY 245.30) to
2018-09-29 13:42 (DOY 272.57), as seen from Earth.


Last Revised: Tuesday, 25-Sep-2018 10:01:19 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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