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

Positions of STEREO A and B for 3-Apr-2025 01:00 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) 1.006530 0.999799 0.957951 0.421104 0.299388 0.446025
Semidiameter (arcsec) 953.402 959.821 1001.750 2278.838 3205.303 2151.512
HCI longitude 79.035 117.605 149.632 223.620 212.649 146.822
HCI latitude -7.088 -6.433 -3.652 2.697 -3.341 -3.257
Carrington longitude 265.544 304.114 336.141 50.129 39.158 333.331
Carrington rotation number 2296.262 2296.155 2296.066 2295.861 2295.891 2296.074
Heliographic (HEEQ) longitude -38.570 -0.000 32.028 106.015 95.044 29.217
Heliographic (HEEQ) latitude -7.088 -6.433 -3.652 2.697 -3.341 -3.257
HAE longitude 154.886 193.182 225.200 299.404 287.848 222.454
Earth Ecliptic (HEE) longitude -38.296 -0.000 32.018 106.222 94.666 29.271
Earth Ecliptic (HEE) latitude 0.034 -0.000 0.026 -2.313 -7.230 0.720
Roll from ecliptic north 0.041 -0.044
Roll from solar north 1.416 -6.296
Light travel time to Earth (min) 5.474 4.503 9.883 8.871 5.394
Separation angle with Earth 38.296 32.018 106.208 94.629 29.279
Separation angle A with B 70.314
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 01:01:07 UTC
Responsible NASA Official: ![[email address: Therese.A.Kucera<at>nasa<dot>gov]](/img/kucera_email1.jpg)
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