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New procedure for updating SolarSoft

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Important notice about STEREO Behind

PLASTIC suffered a background anomaly on Dec 5 2019 that affected the high voltages. Data through February 2019 are test scenarios. Data after February are at lower operational voltages than previously and are undergoing a revised calibration

 

Where is STEREO Today?

Positions of STEREO A and B for 7-Jul-2020 10:00 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       Parker SP   Solar Orbiter     BepiColombo

Heliocentric distance (AU)      1.073220        1.016680        0.961764        0.688755        0.589328        0.849176
Semidiameter (arcsec)            894.157         943.884         997.778        1393.278        1628.341        1130.070

HCI longitude                    271.574         209.505         141.246         233.266         312.077         207.147
HCI latitude                       7.305           3.589          -4.547           3.124           3.722           1.652

Carrington longitude             165.960         103.891          35.632         127.653         206.463         101.533
Carrington rotation number      2232.539        2232.711        2232.901        2232.645        2232.426        2232.718

Heliographic (HEEQ) longitude     62.070           0.000         -68.259          23.762         102.572          -2.358
Heliographic (HEEQ) latitude       7.305           3.589          -4.547           3.124           3.722           1.652

HAE longitude                    347.327         285.468         216.787         309.049          27.756         282.912

Earth Ecliptic (HEE) longitude    61.859           0.000         -68.681          23.580         102.287          -2.556
Earth Ecliptic (HEE) latitude      0.055           0.000           0.005          -2.694          -1.666          -1.663

Roll from ecliptic north          -0.027                          -0.000
Roll from solar north              0.172                          -5.649

Light travel time to Earth (min)           8.943           9.290                   3.953          10.638           1.453

Separation angle with Earth               61.859          68.681                  23.725         102.282           3.049
Separation angle A with B                        130.540

Carrington rotation 2232 runs from 2020-06-18 01:37 (DOY 170.07) to
2020-07-15 06:24 (DOY 197.27), as seen from Earth.


Last Revised: Tuesday, 07-Jul-2020 10:01:04 GMT
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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