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

Positions of STEREO A and B for 10-Feb-2025 04:00 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) 1.001849 0.986785 0.963876 0.728236 0.794020 0.374208
Semidiameter (arcsec) 957.857 972.479 995.592 1317.742 1208.569 2564.426
HCI longitude 26.961 65.377 95.203 251.173 44.335 255.549
HCI latitude -3.130 -6.600 -7.307 3.669 -1.834 0.221
Carrington longitude 229.285 267.701 297.527 93.498 246.659 97.874
Carrington rotation number 2294.363 2294.256 2294.174 2294.740 2294.315 2294.728
Heliographic (HEEQ) longitude -38.416 0.000 29.826 -174.204 -21.042 -169.828
Heliographic (HEEQ) latitude -3.130 -6.600 -7.307 3.669 -1.834 0.221
HAE longitude 102.894 141.317 170.926 326.949 120.037 331.210
Earth Ecliptic (HEE) longitude -38.423 0.000 29.610 -174.368 -21.280 -170.106
Earth Ecliptic (HEE) latitude 0.173 -0.000 -0.084 -3.198 3.237 -6.802
Roll from ecliptic north 0.218 0.145
Roll from solar north 6.678 -0.511
Light travel time to Earth (min) 5.444 4.150 14.242 3.182 11.270
Separation angle with Earth 38.423 29.610 173.526 21.513 168.013
Separation angle A with B 68.033
Carrington rotation 2294 runs from 2025-02-03 03:45 (DOY 34.16) to
2025-03-02 11:51 (DOY 61.49), as seen from Earth.
Last Revised: Monday, 10-Feb-2025 04:01:07 UTC
Responsible NASA Official: ![[email address: Therese.A.Kucera<at>nasa<dot>gov]](/img/kucera_email1.jpg)
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