STEREO - Solar Terrestrial Relations Observatory
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Important notice about reduced STEREO science operations

 

Where is STEREO Today?

Positions of STEREO A and B for 20-Oct-2014 11:00 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)      1.049210        0.995804        0.963925
Semidiameter (arcsec)            914.620         963.672         995.542

HCI longitude                    148.560         311.235         120.704
HCI latitude                      -4.071           5.465          -6.282

Carrington longitude             125.274         287.949          97.418
Carrington rotation number      2156.652        2156.200        2155.729

Heliographic (HEEQ) longitude   -162.675           0.000         169.468
Heliographic (HEEQ) latitude      -4.071           5.465          -6.282

HAE longitude                    224.091          26.773         196.265

Earth Ecliptic (HEE) longitude  -162.682          -0.000         169.492
Earth Ecliptic (HEE) latitude     -0.273          -0.000          -0.039

Roll from ecliptic north           0.875                          -0.209
Roll from solar north             -5.308                          -3.905

Light travel time to Earth (min)          16.815          16.231

Separation angle with Earth              162.680         169.492
Separation angle A with B                         27.827


Last Revised: Monday, 20-Oct-2014 07:01:19 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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