STEREO - Solar Terrestrial Relations Observatory
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Important notice about STEREO Behind

 

Where is STEREO Today?

Positions of STEREO A and B for 12-Dec-2018 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)      1.020637        0.984601        0.957044
Semidiameter (arcsec)            940.224         974.636        1002.700

HCI longitude                    108.716           4.011         262.976
HCI latitude                      -7.010          -0.512           7.301

Carrington longitude             214.310         109.604           8.569
Carrington rotation number      2211.405        2211.696        2211.976

Heliographic (HEEQ) longitude    104.706          -0.000        -101.035
Heliographic (HEEQ) latitude      -7.010          -0.512           7.301

HAE longitude                    184.337          79.809         338.799

Earth Ecliptic (HEE) longitude   104.528          -0.000        -101.010
Earth Ecliptic (HEE) latitude     -0.138          -0.000           0.103

Roll from ecliptic north          -0.038                          -0.018
Roll from solar north             -2.360                          -0.902

Light travel time to Earth (min)          13.191          12.463

Separation angle with Earth              104.528         101.010
Separation angle A with B                        154.462

Carrington rotation 2211 runs from 2018-11-23 03:59 (DOY 327.17) to
2018-12-20 11:39 (DOY 354.49), as seen from Earth.


Last Revised: Tuesday, 11-Dec-2018 23:01:05 EST
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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