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

Positions of STEREO A and B for 23-Jun-2025 13:00 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) 1.056068 1.016362 0.954733 0.223045 0.900070 0.430466
Semidiameter (arcsec) 908.680 944.179 1005.127 4302.386 1066.170 2229.278
HCI longitude 156.664 196.079 235.490 203.319 14.542 132.867
HCI latitude -3.065 2.022 6.112 1.570 8.407 -2.950
Carrington longitude 267.145 306.559 345.970 313.799 125.022 243.347
Carrington rotation number 2299.258 2299.148 2299.039 2299.128 2298.653 2299.324
Heliographic (HEEQ) longitude -39.414 -0.000 39.411 7.240 178.463 -63.212
Heliographic (HEEQ) latitude -3.065 2.022 6.112 1.570 8.407 -2.950
HAE longitude 232.242 271.968 311.479 279.100 89.156 208.608
Earth Ecliptic (HEE) longitude -39.726 0.000 39.511 7.132 177.188 -63.360
Earth Ecliptic (HEE) latitude -0.181 -0.000 0.124 -1.308 10.163 2.367
Roll from ecliptic north -0.220 -0.148
Roll from solar north -6.875 -4.249
Light travel time to Earth (min) 5.865 5.562 6.617 15.872 7.560
Separation angle with Earth 39.726 39.511 7.251 169.459 63.384
Separation angle A with B 79.238
Carrington rotation 2299 runs from 2025-06-19 12:06 (DOY 170.50) to
2025-07-16 16:54 (DOY 197.70), as seen from Earth.
Last Revised: Monday, 23-Jun-2025 13:01:06 UTC
Responsible NASA Official: ![[email address: Therese.A.Kucera<at>nasa<dot>gov]](/img/kucera_email1.jpg)
Accessibility
Privacy Policy and Important Notices
Feedback and comments: webmaster
|