STEREO - Science Center - Where is STEREO?

Where is STEREO Today?

Positions of STEREO A and B for 29-Jun-2009 16:00 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)      1.053631        1.016628        0.956794
Semidiameter (arcsec)            910.781         943.932        1002.961

HCI longitude                    154.339         201.983         255.467
HCI latitude                      -3.438           2.728           7.134

Carrington longitude             271.650         319.294          12.778
Carrington rotation number      2085.245        2085.113        2084.965

Heliographic (HEEQ) longitude    -47.644           0.000          53.484
Heliographic (HEEQ) latitude      -3.438           2.728           7.134

HAE longitude                    229.893         277.909         331.348

Earth Ecliptic (HEE) longitude   -48.017          -0.000          53.438
Earth Ecliptic (HEE) latitude     -0.283           0.000           0.111

Roll from ecliptic north          -0.256                          -0.081
Roll from solar north             -6.789                          -1.896

Light travel time to Earth (min)           7.393           7.012

Separation angle with Earth               48.017          53.438
Separation angle A with B                        101.455

Last Revised: Monday, 29-Jun-2009 12:14:28 EDT
Responsible NASA Official: Joseph B. Gurman
Privacy Policy and Important Notices
Feedback and comments: webmaster