STEREO - Science Center - Where is STEREO?

Where is STEREO Today?

Positions of STEREO A and B for 7-Nov-2009 13:00 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)      1.075386        0.990924        0.966907
Semidiameter (arcsec)            892.356         968.417         992.471

HCI longitude                    267.488         329.553          32.071
HCI latitude                       7.280           3.688          -3.987

Carrington longitude             328.415          30.481          92.998
Carrington rotation number      2090.088        2089.915        2089.742

Heliographic (HEEQ) longitude    -62.065          -0.000          62.518
Heliographic (HEEQ) latitude       7.280           3.688          -3.987

HAE longitude                    343.274          45.118         108.057

Earth Ecliptic (HEE) longitude   -61.844          -0.000          62.939
Earth Ecliptic (HEE) latitude      0.035           0.000          -0.120

Roll from ecliptic north           0.020                           0.060
Roll from solar north             -0.297                           6.201

Light travel time to Earth (min)           8.503           8.852

Separation angle with Earth               61.844          62.939
Separation angle A with B                        124.783

Last Revised: Saturday, 07-Nov-2009 08:01:26 EST
Responsible NASA Official: Joseph B. Gurman
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