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Positions of STEREO A and B for 30-Mar-2023 23:00 UT

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 Orbit Tool
• STEREO orbit simulations
• Java orbit viewer (NRL)
• ... other resources

                                STEREO-B           Earth        STEREO-A       Parker SP   Solar Orbiter     BepiColombo

Heliocentric distance (AU)      1.028076        0.998689        0.965673        0.455458        0.374751        0.547513
Semidiameter (arcsec)            933.421         960.888         993.739        2106.953        2560.705        1752.704

HCI longitude                    120.930         114.066         102.474         221.668         121.257         117.696
HCI latitude                      -6.329          -6.627          -7.156           2.595          -7.994          -2.428

Carrington longitude             279.970         273.106         261.515          20.708         280.297         276.736
Carrington rotation number      2269.222        2269.241        2269.274        2268.942        2269.221        2269.231

Heliographic (HEEQ) longitude      6.864           0.000         -11.591         107.602           7.191           3.630
Heliographic (HEEQ) latitude      -6.329          -6.627          -7.156           2.595          -7.994          -2.428

HAE longitude                    196.487         189.661         178.142         297.451         196.702         193.508

Earth Ecliptic (HEE) longitude     6.826           0.000         -11.519         107.790           7.041           3.847
Earth Ecliptic (HEE) latitude     -0.100           0.000          -0.073          -2.233          -1.783           3.993

Roll from ecliptic north           0.834                          -0.364
Roll from solar north             -2.885                          -1.926

Light travel time to Earth (min)           1.033           1.662                  10.127           5.229           3.799

Separation angle with Earth                6.826          11.519                 107.776           7.262           5.542
Separation angle A with B                         18.345

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: Thursday, 30-Mar-2023 19:01:06 EDT
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