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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 3-Jun-2020 14:00 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)      1.084655        1.014423        0.964969        0.195202        0.538831        0.965894
Semidiameter (arcsec)            884.731         945.984         994.464        4916.067        1780.945         993.513

HCI longitude                    242.195         177.426         105.912           0.544         215.557         172.000
HCI latitude                       6.330          -0.325          -7.044          -0.088           5.110          -2.257

Carrington longitude             256.486         191.717         120.204          14.836         229.849         186.291
Carrington rotation number      2231.288        2231.467        2231.666        2231.959        2231.362        2231.483

Heliographic (HEEQ) longitude     64.769          -0.000         -71.514        -176.882          38.132          -5.426
Heliographic (HEEQ) latitude       6.330          -0.325          -7.044          -0.088           5.110          -2.257

HAE longitude                    318.145         253.171         181.555          76.317         291.631         247.546

Earth Ecliptic (HEE) longitude    64.974           0.000         -71.616        -176.855          38.460          -5.625
Earth Ecliptic (HEE) latitude     -0.093           0.000          -0.068          -0.016           0.871          -1.235

Roll from ecliptic north           0.045                          -0.025
Roll from solar north             -3.330                          -2.008

Light travel time to Earth (min)           9.390           9.638                  10.059           5.662           0.920

Separation angle with Earth               64.974          71.616                 176.855          38.468           5.758
Separation angle A with B                        136.590

Carrington rotation 2231 runs from 2020-05-21 20:46 (DOY 142.87) to
2020-06-18 01:37 (DOY 170.07), as seen from Earth.


Last Revised: Wednesday, 03-Jun-2020 14:01:04 GMT
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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