STEREO - Science Center - Where is STEREO?

Where is STEREO Today?

Positions of STEREO A and B for 14-Feb-2013 12:00 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)      1.060062        0.987669        0.957120
Semidiameter (arcsec)            905.256         971.608        1002.620

HCI longitude                    292.214          69.865         200.177
HCI latitude                       6.872          -6.814           2.625

Carrington longitude             323.374         101.025         231.338
Carrington rotation number      2134.102        2133.719        2133.357

Heliographic (HEEQ) longitude   -137.651           0.000         130.313
Heliographic (HEEQ) latitude       6.872          -6.814           2.625

HAE longitude                      7.812         145.779         276.106

Earth Ecliptic (HEE) longitude  -137.967           0.000         130.327
Earth Ecliptic (HEE) latitude      0.153           0.000           0.110

Roll from ecliptic north          -0.168                           0.093
Roll from solar north              2.567                          -6.711

Light travel time to Earth (min)          15.900          14.680

Separation angle with Earth              137.967         130.327
Separation angle A with B                         91.706

Last Revised: Thursday, 14-Feb-2013 07:01:12 EST
Responsible NASA Official: [email address: Joseph.B.Gurman<at>nasa<dot>gov]
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