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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-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)      1.069113        1.016289        0.954443        0.334309        0.944430        0.502800
Semidiameter (arcsec)            897.592         944.247        1005.433        2870.477        1016.092        1908.566

HCI longitude                    176.554         195.218         211.998         288.091           2.212         125.860
HCI latitude                      -0.633           1.916           3.982           3.650           3.893          -3.238

Carrington longitude              80.889          99.553         116.333         192.426         266.547          30.194
Carrington rotation number      2285.775        2285.723        2285.677        2285.465        2285.260        2285.916

Heliographic (HEEQ) longitude    -18.664          -0.000          16.780          92.873         166.994         -69.358
Heliographic (HEEQ) latitude      -0.633           1.916           3.982           3.650           3.893          -3.238

HAE longitude                    252.268         271.101         287.984           3.849          77.468         201.604

Earth Ecliptic (HEE) longitude   -18.834           0.000          16.883          92.748         166.367         -69.498
Earth Ecliptic (HEE) latitude     -0.196           0.000           0.121          -3.244           4.144           2.641

Roll from ecliptic north          -0.576                          -0.396
Roll from solar north             -7.814                          -6.542

Light travel time to Earth (min)           2.871           2.459                   9.024          16.182           8.013

Separation angle with Earth               18.835          16.883                  92.743         165.762          69.521
Separation angle A with B                         35.718

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: Saturday, 22-Jun-2024 09:01:06 UTC
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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