Positions of STEREO A and B for 14-Jun-2026 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 Orbit Tool
• STEREO-A Fly-by Orbit Tool for Summer 2023
• STEREO-A roll angle during Fly-By
• STEREO orbit simulations
• Satellite Situation Center (SSCWeb)
• HelioWeb
• Attitude and orbit text files (CalTech)
• Early orbit summary
• Connections with Parker Solar Probe
• Explanation of coordinate systems

                                STEREO-B           Earth        STEREO-A       Parker SP   Solar Orbiter     BepiColombo

Heliocentric distance (AU)      1.034050        1.015662        0.955348        0.297635        0.867611        0.446554
Semidiameter (arcsec)            928.028         944.830        1004.480        3224.172        1106.057        2148.963

HCI longitude                    126.618         187.306         248.289         212.925          29.782         140.615
HCI latitude                      -5.949           0.930           6.861           2.136           4.184          -3.141

Carrington longitude             227.452         288.140         349.123         313.759         130.616         241.449
Carrington rotation number      2312.368        2312.200        2312.030        2312.128        2312.637        2312.329

Heliographic (HEEQ) longitude    -60.688           0.000          60.983          25.619        -157.524         -46.691
Heliographic (HEEQ) latitude      -5.949           0.930           6.861           2.136           4.184          -3.141

HAE longitude                    202.155         263.131         324.218         288.708         104.887         216.299

Earth Ecliptic (HEE) longitude   -60.976           0.000          61.088          25.578        -158.243         -46.832
Earth Ecliptic (HEE) latitude     -0.119           0.000           0.117          -1.813           7.756           1.466

Roll from ecliptic north          -0.069                          -0.062
Roll from solar north             -4.387                          -2.738

Light travel time to Earth (min)           8.650           8.342                   6.307          15.350           6.499

Separation angle with Earth               60.976          61.088                  25.637         156.966          46.849
Separation angle A with B                        122.064

Carrington rotation 2312 runs from 2026-06-09 02:41 (DOY 160.11) to
2026-07-06 07:26 (DOY 187.31), as seen from Earth.

Last Revised: Sunday, 14-Jun-2026 13:01:07 UTC
Responsible NASA Official:
Accessibility
Privacy Policy and Important Notices
Feedback and comments: webmaster