STEREO - Solar Terrestrial Relations Observatory
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Important notice about STEREO Behind

 

Where is STEREO Today?

Positions of STEREO A and B for 25-May-2018 01:00 UT

Plot of spacecraft positions

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

Heliocentric distance (AU)      1.071282        1.012760        0.967439
Semidiameter (arcsec)            895.775         947.537         991.926

HCI longitude                    274.846         167.877          52.290
HCI latitude                       7.298          -1.529          -5.875

Carrington longitude             353.277         246.308         130.721
Carrington rotation number      2204.019        2204.316        2204.637

Heliographic (HEEQ) longitude    106.968          -0.000        -115.587
Heliographic (HEEQ) latitude       7.298          -1.529          -5.875

HAE longitude                    350.572         243.549         128.288

Earth Ecliptic (HEE) longitude   107.024          -0.000        -115.260
Earth Ecliptic (HEE) latitude      0.072           0.000          -0.124

Roll from ecliptic north           0.024                           0.057
Roll from solar north              0.635                           4.485

Light travel time to Earth (min)          13.939          13.912

Separation angle with Earth              107.024         115.260
Separation angle A with B                        137.716

Carrington rotation 2204 runs from 2018-05-16 10:43 (DOY 136.45) to
2018-06-12 15:40 (DOY 163.65), as seen from Earth.


Last Revised: Thursday, 24-May-2018 21:01:28 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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