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 18-Apr-2019 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)      1.086020        1.004057        0.967192
Semidiameter (arcsec)            883.619         955.750         992.179

HCI longitude                    222.657         132.539          35.853
HCI latitude                       4.748          -5.355          -4.387

Carrington longitude             319.739         229.621         132.935
Carrington rotation number      2216.112        2216.362        2216.631

Heliographic (HEEQ) longitude     90.118           0.000         -96.686
Heliographic (HEEQ) latitude       4.748          -5.355          -4.387

HAE longitude                    298.635         208.076         111.850

Earth Ecliptic (HEE) longitude    90.559           0.000         -96.225
Earth Ecliptic (HEE) latitude     -0.181          -0.000          -0.122

Roll from ecliptic north          -0.001                           0.012
Roll from solar north             -5.327                           5.885

Light travel time to Earth (min)          12.361          12.207

Separation angle with Earth               90.559          96.225
Separation angle A with B                        173.208

Carrington rotation 2216 runs from 2019-04-08 18:59 (DOY  98.79) to
2019-05-06 01:04 (DOY 126.04), as seen from Earth.


Last Revised: Thursday, 18-Apr-2019 12:01:03 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
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