STEREO - Solar Terrestrial Relations Observatory
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Important notice about reduced STEREO science operations

 

Where is STEREO Today?

Positions of STEREO A and B for 29-Jan-2015 22:00 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)      1.085496        0.984978        0.956260
Semidiameter (arcsec)            884.045         974.263        1003.522

HCI longitude                    236.545          53.482         226.824
HCI latitude                       5.941          -5.840           5.428

Carrington longitude             214.134          31.070         204.412
Carrington rotation number      2160.405        2159.914        2159.432

Heliographic (HEEQ) longitude   -176.937           0.000         173.342
Heliographic (HEEQ) latitude       5.941          -5.840           5.428

HAE longitude                    312.514         129.467         302.830

Earth Ecliptic (HEE) longitude  -176.954          -0.000         173.363
Earth Ecliptic (HEE) latitude     -0.120          -0.000           0.125

Roll from ecliptic north           2.256                           1.075
Roll from solar north             -1.734                          -3.880

Light travel time to Earth (min)          17.215          16.119

Separation angle with Earth              176.951         173.362
Separation angle A with B                          9.687


Last Revised: Thursday, 29-Jan-2015 17:01:19 EST
Responsible NASA Official: [e-mail address: gurman<at>gsfc<dot>nasa<dot>gov]
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