STEREO - Solar Terrestrial Relations Observatory
[Home] [Contact] [Site Map]


Important notice about the deactivation of the STEREO ftp server

Important notice about the STEREO redirects

Important notice about STEREO Behind

 

Where is STEREO Today?

Positions of STEREO A and B for 19-Apr-2021 06:00 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)      1.072766        1.004397        0.966610        0.382268        0.850497        0.638052
Semidiameter (arcsec)            894.536         955.427         992.776        2510.355        1128.315        1503.997

HCI longitude                    182.860         133.584          79.956         285.683          35.357           1.152
HCI latitude                       0.075          -5.265          -7.249           3.698           0.336          -0.129

Carrington longitude             342.871         293.596         239.968          85.695         195.369         161.164
Carrington rotation number      2243.048        2243.184        2243.333        2242.762        2243.457        2243.552

Heliographic (HEEQ) longitude     49.275           0.000         -53.628         152.099         -98.227        -132.432
Heliographic (HEEQ) latitude       0.075          -5.265          -7.249           3.698           0.336          -0.129

HAE longitude                    258.612         209.121         155.803           1.442         110.871          76.925

Earth Ecliptic (HEE) longitude    49.492          -0.000         -53.317         152.322         -98.249        -132.196
Earth Ecliptic (HEE) latitude     -0.289           0.000          -0.106          -3.285           4.525           0.020

Roll from ecliptic north           0.246                          -0.082
Roll from solar north             -6.996                           1.180

Light travel time to Earth (min)           7.250           7.361                  11.263          11.693          12.550

Separation angle with Earth               49.492          53.317                 152.143          98.223         132.196
Separation angle A with B                        102.808

Carrington rotation 2243 runs from 2021-04-14 05:18 (DOY 104.22) to
2021-05-11 11:10 (DOY 131.47), as seen from Earth.


Last Revised: Monday, 19-Apr-2021 02:01:05 EDT
Responsible NASA Official: [email address: therese.a.kucera<at>nasa<dot>gov]
Privacy Policy and Important Notices
Webmaster: Kevin Addison