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02:30 UTCSFI: 70= | Ap index:  12  | Kp index:  2  ( n\a @--:--,  n\a @--:--)| X-ray flux:  A7.8 
SW: Density= 4.1 p/cm3 | Speed= 409.1 km/s | Temp=38(x1000)K
IMF: Bx=-2.4nT | By=4.7nT | Bz= -1.9 nT | Bt= 5.7 nT | Lat= -20.0 ° | Lon=117.3°
Sunspots: 0 | Area: 0 10-6/Hemi | New regions: 0
[i]X-ray flares: C=0 M=0 X=0 | Optical flares: M1=0 M2=0 M3=0 | Sub-flares=0
Latest images from the Solar Terrestrial Relations Observatory (STEREO - EUVI/COR1/COR2/HI1/HI2)
Four years after the initial loss of communications anomaly with the Behind observatory, NASA has directed to cease periodic recovery operations with the last support on October 17, 2018.



Solar TErrestrial RElations Observatory (or STEREO) employs two nearly identical space-based observatories. One ahead of Earth in its orbit (STEREO A), the other trailing behind (STEREO B) to provide stereoscopic measurements to study the Sun and the nature of its CMEs. Check the current STEREO positions and ground station coverage.



Beacon images
These are the latest received images from both spacecraft. They are generally of lower quality and resolution. Some factors such as Deep Space Network schedule conflicts may result in delaying the beacon images. Check below for the latest high-resolution images (these are normally delayed by up to 72 hours).

Note: Both HI1 and HI2 images are processed using two different methods. You can swap the different versions by clicking on the full-size image in the popup window.


STEREO A (Earth is to the right (post solar conjunction) in EUVI, COR1 and COR2)
Stereo Ahead EUVI 195 Stereo Ahead COR1 Stereo Ahead COR2 Stereo Ahead HI1 Stereo Ahead HI2
EUVI 195Å COR1 COR2 HI1 STARS/HI1 CME HI2 STARS/HI2 CME
Stereo Behind EUVI 195 Stereo Behind COR1 Stereo Behind COR2 Stereo Behind HI1 Stereo Behind HI2
STEREO B (Earth is to the right in EUVI, COR1 and COR2)
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Latest high-resolution images


STEREO A STEREO B (no contact)

EUVI 171Å EUVI 195Å EUVI 284Å EUVI 304Å EUVI 171Å EUVI 195Å EUVI 284Å EUVI 304Å
Stereo Ahead EUVI 171 high resolution Stereo Ahead EUVI 195 high resolution Stereo Ahead EUVI 284 high resolution Stereo Ahead EUVI 304 high resolutionStereo Behind EUVI 171 high resolution Stereo Behind EUVI 195 high resolution Stereo Behind EUVI 284 high resolution Stereo Behind EUVI 304 high resolution COR1 COR1 rdiff COR2 COR2 rdiff COR1 COR1 rdiff COR2 COR2 rdiff
Stereo Ahead COR1 high resolution Stereo Ahead COR1 RDIFF high resolution Stereo Ahead COR2 high resolution Stereo Ahead COR2 RDIFF high resolutionStereo Behind COR1 high resolution Stereo Behind COR1 RDIFF high resolution Stereo Behind COR2 high resolution Stereo Behind COR2 RDIFF high resolution HI1 HI1 rdiff HI1 STARS HI2 STARS HI1 HI1 rdiff HI1 STARS HI2 STARS
Stereo Ahead HI1 high resolution Stereo Ahead HI1 RDIFF high resolution Stereo Ahead HI1 STARS high resolution Stereo Ahead HI2 STARS high resolutionStereo Behind HI1 high resolution Stereo Behind HI1 RDIFF high resolution Stereo Behind HI1 STARS high resolution Stereo Behind HI2 STARS high resolution

note: The "rdiff" COR and HI images use different type of postprocessing called "running difference". It detects the difference between the current and the previous available frame, thus providing a highlight on the subtle details in the images.

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7-day composite videos (updated daily)
NOTE: Contact with STEREO-B has been lost. As a result the videos may not be updated regularly due to insufficient data.


COR1
 COR2
HI1
 HI2


EUVI-171
 EUVI-195
EUVI-284
 EUVI-304


COR1, COR2, HI1, HI2
 EUVI-171, EUVI-195, EUVI-284, EUVI-304


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Visible planets

STEREO A (Earth is to the right (post solar conjunction))
Visible planets on Stereo Ahead Coronagraph 1 Visible planets on Stereo Ahead Coronagraph 2 Visible planets on Stereo Ahead Heliospheric Imager 1
Visible planets on Stereo Behind Coronagraph 1 Visible planets on Stereo Behind Coronagraph 2 Visible planets on Stereo Behind Heliospheric Imager 1
STEREO B (Earth is to the right)
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IMPACT/PLASTIC solar wind data

Solar wind data plot by IMPACT/PLASTIC
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Status and upcoming events:



STEREO A/B weekly status report from the Mission Operations Center: DOWNLOAD (pdf)



	    STEREO Weekly Meeting Minutes for 2019-11-19 (Week 47)
 
ANNOUNCEMENTS
-------------

* Restoration of the IMPACT server at UCLA is awaiting completion of the hiring
  of a programmer.


INSTRUMENT and SPACECRAFT STATUS
--------------------------------
 
* Ahead is operating nominally.
 
* Four years after the initial loss of communications anomaly with the Behind
  observatory, NASA has directed to cease periodic recovery operations with the
  last support on October 17, 2018.
 
 
DISCUSSION AND OPERATIONS CONSTRAINTS
-------------------------------------

Week 46 (Nov 11-17)

* On day 320 (Nov 16), DSS-55 conducted a Return-to-Service Demonstration track
  with Ahead.  JPL Navigation reported not receiving uplink tracking data
  (UCP/USRP) for the entire demo track.  The uplink OE is investigating the
  problem.  See DR #M111874 more information.

* On day 321 (Nov 17), during the DSS-14 support for Ahead, the station was not
  able to support downlink activities and provide telemetry due to a failed
  HEMT X-Band low noise amplifier.  On the subsequent DSS-63 support, MOPs
  repositioned SSR pointers and recovered 75% (19.5 hours) of the affected
  DSS-14 data.  This anomaly resulted in the loss of 6.5 hours of SSR data.
  See DR #G120642 more information.

* The average daily science data return for Ahead was 5.5 Gbits during this
  week.

Week 47 (Nov 18-24)

* Ahead has eleven passes during the week, and overall coverage is nominal.
  There are nine passes at 720 kbps, one at 480 kbps, and one at 160 kbps.

* The annual STEREO assessment review has now been moved to Thursday, Nov 21,
  one week before Thanksgiving, from 8:30 AM to 12 noon EST.

Week 48 (Nov 25-Dec 1)

* Ahead has nine passes during the week, and overall coverage is nominal.
  There are eight passes at 720 kbps, and one at 160 kbps.

* Thursday, Nov 28, is Thanksgiving.  APL will be closed Nov 28-29.

Week 49 (Dec 2-8)

* Ahead has eleven passes during the week, and overall coverage is nominal.
  There are ten passes at 720 kbps, and one at 480 kbps.

Week 50 (Dec 9-15)

* Ahead has twelve passes during the week, and overall coverage is nominal.  An
  ESA New Norcia pass was added on Thursday, Dec 12.  There are nine passes at
  720 kbps, two at 360 kbps, and one at 240 kbps.

* The 124th momentum dump on Ahead is scheduled for Tuesday, Dec 10, with
  ignition at 18:40 UT.

Week 51 (Dec 16-22)

* Ahead has fifteen passes during the week, and overall coverage is nominal.
  There are twelve passes at 720 kbps, two at 360 kbps, and one at 160 kbps.

   
COORDINATED OBSERVATIONS
  
-------------------------------------------------------------------------------
Scheduled activities for Week 46:

M Nov 11 (315)  
T Nov 12 (316)  
W Nov 13 (317)  
T Nov 14 (318)  
F Nov 15 (319)  
S Nov 16 (320)  Ahead: Return-to-service test with station 55, 15:45-18:45 UT
S Nov 17 (321)  

-------------------------------------------------------------------------------
Scheduled activities for Week 47:

M Nov 18 (322)  
T Nov 19 (323)  
W Nov 20 (324)  
T Nov 21 (325)  STEREO subsystem review, 8:30-12 EST
F Nov 22 (326)  
S Nov 23 (327)  
S Nov 24 (328)  

-------------------------------------------------------------------------------
Scheduled activities for Week 48:

M Nov 25 (329)  
T Nov 26 (330)  
W Nov 27 (331)  
T Nov 28 (332)  Thanksgiving
F Nov 29 (333)  
S Nov 30 (334)  
S Dec 01 (335)  

-------------------------------------------------------------------------------
Scheduled activities for Week 49:

M Dec 02 (336)  
T Dec 03 (337)  
W Dec 04 (338)  
T Dec 05 (339)  
F Dec 06 (340)  
S Dec 07 (341)  
S Dec 08 (342)  

-------------------------------------------------------------------------------
Scheduled activities for Week 50:

M Dec 09 (343)  
T Dec 10 (344)  Ahead: Momentum dump, 18:40 UT
W Dec 11 (345)  
T Dec 12 (346)  
F Dec 13 (347)  
S Dec 14 (348)  
S Dec 15 (349)  

-------------------------------------------------------------------------------
Scheduled activities for Week 51:

M Dec 16 (350)  
T Dec 17 (351)  
W Dec 18 (352)  
T Dec 19 (353)  
F Dec 20 (354)  
S Dec 21 (355)  
S Dec 22 (356)  

-------------------------------------------------------------------------------


Upcoming events:

Behind events are contingent on recovering the spacecraft.

2019:

* Dec 26		Parker Solar Probe Venus flyby

2020:

* Jan 21-23		Ahead: COR2 deep field campaign (TBC)
* Jan 24-Feb 4		Parker Solar Probe perihelion pass
* May			Behind: Switch downlink rate to 360 kbps for 34 meter
* Jun			Ahead: Switch downlink rate to 360 kbps for 34 meter
* Jun			Behind: Switch downlink rate to 480 kbps for 34 meter
* Jun 2-13		Parker Solar Probe perihelion pass
* Jul 11		Parker Solar Probe Venus flyby, in HI2-A field-of-view
* Sep			Ahead: Switch downlink rate to 480 kbps for 34 meter
* Sep 22-Oct 2		Parker Solar Probe perihelion pass

2021:

* Jan 13-23		Parker Solar Probe perihelion pass
* Feb 20		Parker Solar Probe Venus flyby
* Apr 25-May 4		Parker Solar Probe perihelion pass
* Jul			Behind: Switch downlink rate to 720 kbps for 34 meter
* Aug			Ahead: Switch downlink rate to 720 kbps for 34 meter
* Aug 5-15		Parker Solar Probe perihelion pass
* Oct 16		Parker Solar Probe Venus flyby
* Nov 17-26		Parker Solar Probe perihelion pass

2022:

* Feb 21-Mar 2		Parker Solar Probe perihelion pass
* May 28-Jun 7		Parker Solar Probe perihelion pass
* Sep 2-11		Parker Solar Probe perihelion pass
* Dec 7-16		Parker Solar Probe perihelion pass

2023:

* Mar 13-23		Parker Solar Probe perihelion pass
* May 5			Behind: Mercury transit
* Jun 17-27		Parker Solar Probe perihelion pass
* Jul 17		Behind: Closest approach to Earth
* Aug 13		Ahead: Closest approach to Earth
* Aug 21		Parker Solar Probe Venus flyby
* Sep 23-Oct 3		Parker Solar Probe perihelion pass
* Dec 25-Jan 3		Parker Solar Probe perihelion pass

2024:

* Mar 26-Apr 4		Parker Solar Probe perihelion pass
* Jun 26-Jul 5		Parker Solar Probe perihelion pass
* Sep 26-Oct 5		Parker Solar Probe perihelion pass
* Nov 6			Parker Solar Probe Venus flyby, in HI2-A field-of-view
* Dec 20-29		Parker Solar Probe perihelion pass

2025:

* Mar 19-27		Parker Solar Probe perihelion pass
* Apr 7			Ahead: Mercury transit
* Jun 15-24		Parker Solar Probe perihelion pass

2026:

2027:

* Feb 1			Behind: Mercury transit

2028:

2029:

* Jun 30		Ahead: Mercury transit


Courtesy of STEREO/SECCHI consortium.
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