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 16-Jan-2019 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)      1.044448        0.983664        0.959766
Semidiameter (arcsec)            918.789         975.564         999.855

HCI longitude                    142.210          39.850         300.471
HCI latitude                      -4.717          -4.664           6.297

Carrington longitude             106.030           3.670         264.291
Carrington rotation number      2212.705        2212.990        2213.266

Heliographic (HEEQ) longitude    102.360           0.000         -99.379
Heliographic (HEEQ) latitude      -4.717          -4.664           6.297

HAE longitude                    217.727         115.842          16.033

Earth Ecliptic (HEE) longitude   101.884           0.000         -99.809
Earth Ecliptic (HEE) latitude     -0.259          -0.000           0.039

Roll from ecliptic north          -0.056                          -0.005
Roll from solar north             -5.781                           3.666

Light travel time to Earth (min)          13.102          12.366

Separation angle with Earth              101.884          99.809
Separation angle A with B                        158.306

Carrington rotation 2212 runs from 2018-12-20 11:39 (DOY 354.49) to
2019-01-16 19:41 (DOY  16.82), as seen from Earth.


Last Revised: Wednesday, 16-Jan-2019 08:01:03 EST
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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