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

Positions of STEREO A and B for 3-Oct-2023 11:00 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) 1.061746 1.000697 0.961629 0.265074 0.305690 0.365454
Semidiameter (arcsec) 903.820 958.959 997.919 3620.228 3139.217 2625.847
HCI longitude 285.332 294.061 298.253 208.399 161.163 286.861
HCI latitude 7.050 6.627 6.436 1.882 -6.146 2.636
Carrington longitude 318.981 327.711 331.903 242.049 194.813 320.510
Carrington rotation number 2276.114 2276.090 2276.078 2276.328 2276.459 2276.110
Heliographic (HEEQ) longitude -8.729 0.000 4.192 -85.662 -132.897 -7.200
Heliographic (HEEQ) latitude 7.050 6.627 6.436 1.882 -6.146 2.636
HAE longitude 0.979 9.656 13.825 284.182 236.334 2.657
Earth Ecliptic (HEE) longitude -8.677 0.000 4.169 -85.474 -133.321 -6.998
Earth Ecliptic (HEE) latitude 0.054 0.000 0.042 -1.574 -3.769 -4.304
Roll from ecliptic north 0.358 -0.576
Roll from solar north 2.271 2.850
Light travel time to Earth (min) 1.393 0.677 8.440 10.233 5.332
Separation angle with Earth 8.677 4.169 85.475 133.205 8.210
Separation angle A with B 12.846
Carrington rotation 2276 runs from 2023-10-01 00:16 (DOY 274.01) to
2023-10-28 07:14 (DOY 301.30), as seen from Earth.
Last Revised: Tuesday, 03-Oct-2023 11:01:06 UTC
Responsible NASA Official: ![[email address: Therese.A.Kucera<at>nasa<dot>gov]](/img/kucera_email1.jpg)
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