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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 20-Jun-2024 09:00 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)      1.068065        1.016162        0.954454        0.386222        0.940417        0.489762
Semidiameter (arcsec)            898.473         944.365        1005.421        2484.654        1020.427        1959.377

HCI longitude                    174.807         193.324         209.885         283.286           0.734         120.776
HCI latitude                      -0.854           1.683           3.751           3.742           4.072          -3.140

Carrington longitude             107.511         126.027         142.588         215.990         293.438          53.479
Carrington rotation number      2285.701        2285.650        2285.604        2285.400        2285.185        2285.851

Heliographic (HEEQ) longitude    -18.517           0.000          16.561          89.962         167.410         -72.548
Heliographic (HEEQ) latitude      -0.854           1.683           3.751           3.742           4.072          -3.140

HAE longitude                    250.507         269.194         285.863         359.046          75.979         196.540

Earth Ecliptic (HEE) longitude   -18.687           0.000          16.669          89.852         166.786         -72.654
Earth Ecliptic (HEE) latitude     -0.196          -0.000           0.119          -3.316           4.135           3.092

Roll from ecliptic north          -0.580                          -0.398
Roll from solar north             -7.802                          -6.681

Light travel time to Earth (min)           2.847           2.430                   9.034          16.155           8.217

Separation angle with Earth               18.688          16.670                  89.853         166.165          72.680
Separation angle A with B                         35.358

Carrington rotation 2285 runs from 2024-06-02 16:44 (DOY 154.70) to
2024-06-29 21:30 (DOY 181.90), as seen from Earth.


Last Revised: Thursday, 20-Jun-2024 09:01:05 UTC
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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