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 30-Sep-2016 09:00 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)      1.007642        1.001352        0.961694
Semidiameter (arcsec)            952.350         958.332         997.852

HCI longitude                     84.300         291.794         143.440
HCI latitude                      -7.235           6.738          -4.323

Carrington longitude              57.012         264.506         116.151
Carrington rotation number      2181.842        2182.265        2182.677

Heliographic (HEEQ) longitude    152.506          -0.000        -148.355
Heliographic (HEEQ) latitude      -7.235           6.738          -4.323

HAE longitude                    160.111           7.402         218.986

Earth Ecliptic (HEE) longitude   152.709           0.000        -148.416
Earth Ecliptic (HEE) latitude     -0.019          -0.000           0.010

Roll from ecliptic north          -0.038                          -0.018
Roll from solar north              0.680                          -5.837

Light travel time to Earth (min)          16.238          15.711

Separation angle with Earth              152.709         148.416
Separation angle A with B                         58.875


Last Revised: Friday, 30-Sep-2016 05:01:23 EDT
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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