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Information about STEREO-A close approach to Earth, August 2023

 

Where is STEREO Today?

Positions of STEREO A and B for 21-Jul-2024 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       Parker SP   Solar Orbiter     BepiColombo

Heliocentric distance (AU)      1.080734        1.016039        0.955237        0.590098        0.925339        0.576502
Semidiameter (arcsec)            887.941         944.479        1004.597        1626.217        1037.055        1664.569

HCI longitude                    201.392         222.565         242.543         235.875          23.237         184.030
HCI latitude                       2.478           4.922           6.565           3.224           1.112          -2.533

Carrington longitude              57.334          78.507          98.485          91.817         239.179          39.973
Carrington rotation number      2286.841        2286.782        2286.726        2286.745        2286.336        2286.889

Heliographic (HEEQ) longitude    -21.173           0.000          19.978          13.311         160.672         -38.534
Heliographic (HEEQ) latitude       2.478           4.922           6.565           3.224           1.112          -2.533

HAE longitude                    277.293         298.560         318.503         311.657          98.707         259.445

Earth Ecliptic (HEE) longitude   -21.267          -0.000          19.943          13.097         160.147         -39.115
Earth Ecliptic (HEE) latitude     -0.182           0.000           0.121          -2.785           3.962          -3.024

Roll from ecliptic north          -0.466                          -0.330
Roll from solar north             -7.216                          -3.667

Light travel time to Earth (min)           3.261           2.883                   3.848          15.897           5.623

Separation angle with Earth               21.267          19.944                  13.385         159.771          39.213
Separation angle A with B                         41.211

Carrington rotation 2286 runs from 2024-06-29 21:30 (DOY 181.90) to
2024-07-27 02:25 (DOY 209.10), as seen from Earth.


Last Revised: Sunday, 21-Jul-2024 04:01:06 UTC
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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