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 30-Mar-2015 04:00 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)      1.062734        0.998517        0.958801
Semidiameter (arcsec)            902.980         961.053        1000.862

HCI longitude                    288.303         113.330         289.741
HCI latitude                       7.024          -6.664           6.890

Carrington longitude             145.466         330.493         146.903
Carrington rotation number      2161.596        2162.082        2161.592

Heliographic (HEEQ) longitude    174.973           0.000         176.411
Heliographic (HEEQ) latitude       7.024          -6.664           6.890

HAE longitude                      3.927         188.929           5.358

Earth Ecliptic (HEE) longitude   174.998           0.000         176.429
Earth Ecliptic (HEE) latitude      0.136          -0.000           0.060

Roll from ecliptic north        -178.441                           0.968
Roll from solar north           -176.169                           3.412

Light travel time to Earth (min)          17.128          16.272

Separation angle with Earth              174.996         176.428
Separation angle A with B                          1.433


Last Revised: Monday, 30-Mar-2015 00:01:50 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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