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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 19-Mar-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)      1.010187        0.995657        0.962293        0.408503        0.442795        0.574872
Semidiameter (arcsec)            949.951         963.813         997.230        2349.135        2167.204        1669.288

HCI longitude                     87.989         103.255         112.245         281.433         100.751         157.002
HCI latitude                      -7.244          -7.060          -6.770           3.770          -7.497          -3.261

Carrington longitude             259.841         275.108         284.097          93.286         272.603         328.855
Carrington rotation number      2282.278        2282.236        2282.211        2281.741        2282.243        2282.087

Heliographic (HEEQ) longitude    -15.267          -0.000           8.989         178.177          -2.505          53.746
Heliographic (HEEQ) latitude      -7.244          -7.060          -6.770           3.770          -7.497          -3.261

HAE longitude                    163.770         178.919         187.847         357.193         176.424         232.554

Earth Ecliptic (HEE) longitude   -15.149           0.000           8.928         178.275          -2.495          53.635
Earth Ecliptic (HEE) latitude      0.004           0.000          -0.054          -3.338          -0.371          -0.414

Roll from ecliptic north           0.013                           0.339
Roll from solar north              0.266                          -2.400

Light travel time to Earth (min)           2.202           1.297                  11.674           4.605           6.670

Separation angle with Earth               15.149           8.928                 176.243           2.523          53.636
Separation angle A with B                         24.077

Carrington rotation 2282 runs from 2024-03-12 22:25 (DOY  72.93) to
2024-04-09 05:32 (DOY 100.23), as seen from Earth.


Last Revised: Tuesday, 19-Mar-2024 09:01:07 UTC
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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