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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 23-Feb-2024 23:00 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)      1.001699        0.989404        0.964984        0.717102        0.731428        0.435912
Semidiameter (arcsec)            958.000         969.905         994.450        1338.203        1311.993        2201.427

HCI longitude                     63.545          78.633          86.649         258.489          52.565          98.433
HCI latitude                      -6.417          -7.112          -7.337           3.790          -2.927          -2.422

Carrington longitude             221.733         236.822         244.837          56.678         210.753         256.622
Carrington rotation number      2281.384        2281.342        2281.320        2280.843        2281.415        2281.287

Heliographic (HEEQ) longitude    -15.088           0.000           8.016         179.856         -26.068          19.800
Heliographic (HEEQ) latitude      -6.417          -7.112          -7.337           3.790          -2.927          -2.422

HAE longitude                    139.489         154.488         162.442         334.261         128.334         174.221

Earth Ecliptic (HEE) longitude   -14.998           0.000           7.955         179.773         -26.153          19.733
Earth Ecliptic (HEE) latitude      0.085          -0.000          -0.097          -3.318           2.836           4.751

Roll from ecliptic north           0.313                           0.692
Roll from solar north              3.537                           1.115

Light travel time to Earth (min)           2.164           1.146                  14.188           3.868           4.989

Separation angle with Earth               14.999           7.955                 176.675          26.296          20.275
Separation angle A with B                         22.954

Carrington rotation 2281 runs from 2024-02-14 14:30 (DOY  45.60) to
2024-03-12 22:25 (DOY  72.93), as seen from Earth.


Last Revised: Friday, 23-Feb-2024 23:01:06 UTC
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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