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

Positions of STEREO A and B for 26-Mar-2025 08:00 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) 1.003892 0.997604 0.958801 0.193729 0.316616 0.419636
Semidiameter (arcsec) 955.908 961.932 1000.862 4953.442 3030.891 2286.810
HCI longitude 71.312 109.944 141.550 198.244 156.757 122.328
HCI latitude -6.815 -6.820 -4.514 1.251 -15.572 -2.604
Carrington longitude 7.159 45.791 77.397 134.091 92.604 58.175
Carrington rotation number 2295.980 2295.873 2295.785 2295.628 2295.743 2295.838
Heliographic (HEEQ) longitude -38.632 0.000 31.606 88.300 46.813 12.384
Heliographic (HEEQ) latitude -6.815 -6.820 -4.514 1.251 -15.572 -2.604
HAE longitude 147.215 185.563 217.092 274.024 230.858 198.125
Earth Ecliptic (HEE) longitude -38.348 -0.000 31.529 88.461 45.295 12.563
Earth Ecliptic (HEE) latitude 0.060 0.000 0.008 -1.026 -12.613 3.523
Roll from ecliptic north 0.072 -0.016
Roll from solar north 2.390 -5.689
Light travel time to Earth (min) 5.468 4.432 8.410 6.766 4.960
Separation angle with Earth 38.348 31.529 88.461 46.648 13.040
Separation angle A with B 69.877
Carrington rotation 2295 runs from 2025-03-02 11:51 (DOY 61.49) to
2025-03-29 19:19 (DOY 88.80), as seen from Earth.
Last Revised: Wednesday, 26-Mar-2025 08:01:06 UTC
Responsible NASA Official: ![[email address: Therese.A.Kucera<at>nasa<dot>gov]](/img/kucera_email1.jpg)
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