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Where is STEREO Today?

Positions of STEREO A and B for 25-Mar-2023 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       Parker SP   Solar Orbiter     BepiColombo

Heliocentric distance (AU)      1.024582        0.997187        0.966060        0.327646        0.446464        0.509353
Semidiameter (arcsec)            936.604         962.335         993.341        2928.854        2149.396        1884.014

HCI longitude                    115.775         108.715          96.861         209.877          99.835         105.465
HCI latitude                      -6.621          -6.872          -7.284           1.956          -7.450          -1.880

Carrington longitude             351.057         343.997         332.143          85.158         335.116         340.747
Carrington rotation number      2269.025        2269.044        2269.077        2268.763        2269.069        2269.053

Heliographic (HEEQ) longitude      7.060           0.000         -11.854         101.162          -8.881          -3.250
Heliographic (HEEQ) latitude      -6.621          -6.872          -7.284           1.956          -7.450          -1.880

HAE longitude                    191.356         184.341         172.571         285.659         175.517         181.286

Earth Ecliptic (HEE) longitude     7.015          -0.000         -11.770         101.317          -8.825          -3.055
Earth Ecliptic (HEE) latitude     -0.085          -0.000          -0.083          -1.664          -0.304           5.109

Roll from ecliptic north           0.687                          -0.401
Roll from solar north             -2.459                          -1.266

Light travel time to Earth (min)           1.054           1.694                   9.224           4.660           4.104

Separation angle with Earth                7.015          11.771                 101.312           8.830           5.951
Separation angle A with B                         18.785

Carrington rotation 2269 runs from 2023-03-24 08:52 (DOY  83.37) to
2023-04-20 15:34 (DOY 110.65), as seen from Earth.


Last Revised: Saturday, 25-Mar-2023 14:01:05 UTC
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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