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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 22-Feb-2024 08:00 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)      1.001360        0.989046        0.965142        0.724825        0.746277        0.422515
Semidiameter (arcsec)            958.324         970.256         994.286        1323.943        1285.887        2271.228

HCI longitude                     61.909          76.985          84.949         257.516          50.616          92.895
HCI latitude                      -6.317          -7.069          -7.324           3.777          -2.671          -2.185

Carrington longitude             243.147         258.223         266.187          78.755         231.854         274.133
Carrington rotation number      2281.325        2281.283        2281.261        2281.781        2281.356        2281.239

Heliographic (HEEQ) longitude    -15.076          -0.000           7.964        -179.469         -26.369          15.909
Heliographic (HEEQ) latitude      -6.317          -7.069          -7.324           3.777          -2.671          -2.185

HAE longitude                    137.861         152.852         160.756         333.289         126.371         168.670

Earth Ecliptic (HEE) longitude   -14.991           0.000           7.904        -179.563         -26.481          15.818
Earth Ecliptic (HEE) latitude      0.090           0.000          -0.099          -3.305           2.939           5.058

Roll from ecliptic north           0.332                           0.712
Roll from solar north              3.739                           1.349

Light travel time to Earth (min)           2.162           1.138                  14.249           3.861           4.961

Separation angle with Earth               14.992           7.905                 176.666          26.631          16.587
Separation angle A with B                         22.896

Carrington rotation 2281 runs from 2024-02-14 14:30 (DOY  45.60) to
2024-03-12 22:25 (DOY  72.93), as seen from Earth.


Last Revised: Thursday, 22-Feb-2024 08:01:09 UTC
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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