STEREO - Solar Terrestrial Relations Observatory
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Where is STEREO Today?

Positions of STEREO A and B for 25-Jun-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)      1.070613        1.016453        0.954442        0.243018        0.949087        0.520358
Semidiameter (arcsec)            896.335         944.094        1005.433        3948.800        1011.106        1844.167

HCI longitude                    179.132         198.020         215.126         299.282           4.377         132.934
HCI latitude                      -0.305           2.258           4.314           3.339           3.625          -3.333

Carrington longitude              41.504          60.393          77.499         161.654         226.749         355.307
Carrington rotation number      2285.885        2285.832        2285.785        2285.551        2285.370        2286.013

Heliographic (HEEQ) longitude    -18.888          -0.000          17.106         101.261         166.356         -65.086
Heliographic (HEEQ) latitude      -0.305           2.258           4.314           3.339           3.625          -3.333

HAE longitude                    254.866         273.922         291.122          15.037          79.650         208.642

Earth Ecliptic (HEE) longitude   -19.056           0.000          17.199         101.114         165.728         -65.281
Earth Ecliptic (HEE) latitude     -0.196           0.000           0.122          -2.987           4.151           1.980

Roll from ecliptic north          -0.569                          -0.394
Roll from solar north             -7.820                          -6.320

Light travel time to Earth (min)           2.908           2.504                   9.063          16.211           7.721

Separation angle with Earth               19.057          17.200                 101.099         165.149          65.296
Separation angle A with B                         36.257

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: Tuesday, 25-Jun-2024 04:01:07 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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