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 2-Aug-2014 02:00 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)      1.003259        1.014878        0.967266
Semidiameter (arcsec)            956.510         945.560         992.103

HCI longitude                     71.961         233.546          38.114
HCI latitude                      -6.855           5.845          -4.615

Carrington longitude              94.562         256.147          60.715
Carrington rotation number      2153.737        2153.288        2152.831

Heliographic (HEEQ) longitude   -161.586          -0.000         164.567
Heliographic (HEEQ) latitude      -6.855           5.845          -4.615

HAE longitude                    147.860         309.532         114.115

Earth Ecliptic (HEE) longitude  -161.672           0.000         164.584
Earth Ecliptic (HEE) latitude      0.044           0.000          -0.122

Roll from ecliptic north          -0.136                          -0.445
Roll from solar north              2.104                           5.255

Light travel time to Earth (min)          16.571          16.337

Separation angle with Earth              161.672         164.583
Separation angle A with B                         33.745


Last Revised: Friday, 01-Aug-2014 22:01:30 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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