Information
about STEREO-A close approach to Earth, August 2023

Positions of STEREO A and B for 3-Apr-2025 10:00 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-B Earth STEREO-A Parker SP Solar Orbiter BepiColombo
Heliocentric distance (AU) 1.006674 0.999904 0.957911 0.429394 0.301054 0.446932
Semidiameter (arcsec) 953.266 959.720 1001.792 2234.841 3187.562 2147.145
HCI longitude 79.410 117.976 150.026 224.221 215.270 147.948
HCI latitude -7.098 -6.411 -3.608 2.725 -2.561 -3.274
Carrington longitude 260.600 299.166 331.215 45.410 36.460 329.138
Carrington rotation number 2296.276 2296.169 2296.080 2295.874 2295.899 2296.086
Heliographic (HEEQ) longitude -38.566 -0.000 32.049 106.245 97.294 29.972
Heliographic (HEEQ) latitude -7.098 -6.411 -3.608 2.725 -2.561 -3.274
HAE longitude 155.258 193.552 225.595 300.004 290.553 223.570
Earth Ecliptic (HEE) longitude -38.294 -0.000 32.043 106.452 97.001 30.018
Earth Ecliptic (HEE) latitude 0.033 0.000 0.027 -2.339 -6.730 0.584
Roll from ecliptic north 0.039 -0.045
Roll from solar north 1.368 -6.322
Light travel time to Earth (min) 5.474 4.507 9.936 8.971 5.427
Separation angle with Earth 38.294 32.043 106.438 96.953 30.023
Separation angle A with B 70.337
Carrington rotation 2296 runs from 2025-03-29 19:19 (DOY 88.80) to
2025-04-26 01:47 (DOY 116.07), as seen from Earth.
Last Revised: Thursday, 03-Apr-2025 10:01:07 UTC
Responsible NASA Official: ![[email address: Therese.A.Kucera<at>nasa<dot>gov]](/img/kucera_email1.jpg)
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