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SFI: 73 | Ap index:  1  | Kp index:  1  ( 0 @16:45,  0 @19:45)| X-ray flux:  A1.8 
SW: Density= 3.8 p/cm3 | Speed= 314.6 km/s | Temp=43(x1000)K
IMF: Bx=-2.4nT | By=-1.1nT | Bz= 5.6 nT | Bt= 6.2 nT | Lat= 64.8 ° | Lon=205.8°
Sunspots: 13 | Area: 60 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)
Downlink from STEREO Behind has been detected during the recovery track on August 21st 2016. More info | All news.



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 2018-11-06 (Week 45)

ANNOUNCEMENTS
-------------

* None


INSTRUMENT and SPACECRAFT STATUS
--------------------------------

* Ahead is operating nominally on the main lobe of the high gain antenna.
  Recovery continues for the IMPACT and PLASTIC instruments due to the power
  consumption anomaly on Sep 23.

* 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 44 (Oct 29-Nov 4)

* On day 306 (Nov 2), during the DSS-36 support for Ahead, the uplink was not
  established until ~20 minutes prior to EOT due to airspace restrictions for
  aircraft extinguishing fires near the Canberra complex.  This anomaly
  resulted in loss of 3.15 hours of command time and two-way tracking data.
  Once the uplink was established, there was only time to send three no-op
  commands to reset the command loss timer.  See DR #C113742 for more
  information.  Also during this track, turbo decoder lock was lost
  intermittently between 0535z and 0536z.  This anomaly resulted in the loss of
  10 frames of SSR data.

* On day 307 (Nov 3), during the DSS-43 support for Ahead, the uplink was not
  established due to airspace restrictions for aircraft extinguishing fires
  near the Canberra complex.  This anomaly resulted in loss of 4.8 hours of
  command time and two-way tracking data.  See DR #C113751 for more
  information.

* On day 308 (Nov 4), during the first DSS-34 support for Ahead (0305z/0630z),
  the uplink was not established due to airspace restrictions for aircraft
  extinguishing fires near the Canberra complex.  This anomaly resulted in loss
  of 3.25 hours of command time and two-way tracking data.  See DR #C113757 for
  more information.

* On day 308 (Nov 4), during the second DSS-34 support for Ahead
  (2325z/309-0245z), the uplink was not established due to airspace
  restrictions for aircraft extinguishing fires near the Canberra complex.
  This anomaly resulted in loss of 3.2 hours of command time and two-way
  tracking data.  See DR #C113764 for more information.

* On day 303 (Oct 30), the 45th SECCHI stepped calibration on Ahead was
  executed at 0610z for the perihelion in the Ahead orbit.  This was the 14th
  SECCHI stepped calibration roll to be conducted without gyro use.  The
  SECCHI/COR1 team reported that the data look good.

* On day 307, the SECCHI COR2 Deep Exposure Campaign for the 1st Parker Solar
  Probe perihelion encounter began.  This four day campaign is scheduled to
  conclude on day 310.  The data from the first day of the campaign look good.

* The average daily science data return for Ahead was 4.5 Gbits during this
  week.

Week 45 (Nov 5-Nov 11)

* SECCHI COR2 deep exposures in support of the first perihelion pass of Parker
  Solar Probe continues through today (Nov 6).

* Ahead has thirteen passes during the week and overall coverage is nominal.
  There are three passes at 720 kbps, two at 360 kbps, two at 240 kpbs and six
  at 160 kbps, including ESA supports with New Norcia (Tuesday and Friday), and
  Cebreros (Friday).  ESA supports are used to maintain data return, not to
  increase the amount of data.

Week 46 (Nov 12-18)

* Ahead reaches perihelion on Nov 12.

* The 114th momentum dump on Ahead is scheduled for Monday, Nov 12, with
  ignition at 14:30 UT.  This will be the 33rd dump without using the gyros.
  The dump was moved from the original date of Nov 7 at the request of the
  SECCHI team to avoid conflicts with the first Parker Solar Probe perihelion
  pass.  The momentum dump will be conducted during an ESA Cebreros pass.

* Ahead has eleven passes during the week, and overall coverage is nominal.
  There are five passes at 720 kbps, three at 360 kbps, and three at 160 kbps,
  including ESA Cebreros passes on Monday and Tuesday.

Week 47 (Nov 19-25)

* Thursday, Nov 22, is Thanksgiving.  Both Thursday and Friday are holidays at
  APL.

* Ahead has twelve passes during the week, and overall coverage is nominal.
  There are four passes at 720 kbps, one at 360 kbps, three at 240 kbps, and
  four at 160 kbps, including ESA Cebreros passes on Wednesday and Friday.

Week 48 (Nov 26-Dec 2)

* Chanukah starts on Dec 2, and runs though Dec 10.

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

Week 49 (Dec 3-9)

* Ahead has nine passes during the week, and overall coverage is nominal.
  There are four passes at 720 kbps, three at 360 kbps, and two at 240 kbps.

Week 50 (Dec 10-16)

* Ahead has ten passes during the week, and overall coverage is nominal.  There
  are six passes at 720 kbps, one at 360 kbps, two at 240 kbps, and one at 160
  kbps, including an ESA New Norcia pass on Thursday, Dec 13.

Week 51 (Dec 17-23)

* The 115th momentum dump on Ahead is scheduled for Wednesday, Dec 19, with
  ignition at 17:00 UT.  This will be the 34th dump without using the gyros.
  This dump will be occuring during an ESA pass.

* Ahead has twelve passes during the week, and overall coverage is nominal.
  There are four passes at 720 kbps, two at 360 kbps, two at 240 kbps, and four
  at 160 kbps, including two ESA passes.

Other

* Parker Solar Probe had it's first perihelion last night (Nov 5-6).  Although
  there is no communication with the spacecraft so close to the Sun, beacon
  tones picked up by DSN indicate that the spacecraft is operating nominally.

* The MOC is wating for a go-ahead on additional SLE testing.


COORDINATED OBSERVATIONS

-------------------------------------------------------------------------------
Scheduled activities for Week 45:

M Nov 05 (309)  SECCHI COR2 deep exposure campaign for Parker Solar Probe
T Nov 06 (310)  SECCHI COR2 deep exposure campaign for Parker Solar Probe
W Nov 07 (311)  
T Nov 08 (312)  
F Nov 09 (313)  
S Nov 10 (314)  
S Nov 11 (315)  

-------------------------------------------------------------------------------
Scheduled activities for Week 46:

M Nov 12 (316)  Ahead: Perihelion
		Ahead:	Momentum dump, 14:30 UT
T Nov 13 (317)  
W Nov 14 (318)  
T Nov 15 (319)  
F Nov 16 (320)  
S Nov 17 (321)  
S Nov 18 (322)  

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

M Nov 19 (323)  
T Nov 20 (324)  
W Nov 21 (325)  
T Nov 22 (326)  Thanksgiving
F Nov 23 (327)  
S Nov 24 (328)  
S Nov 25 (329)  

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

M Nov 26 (330)  
T Nov 27 (331)  
W Nov 28 (332)  
T Nov 29 (333)  
F Nov 30 (334)  
S Dec 01 (335)  
S Dec 02 (336)  

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

M Dec 03 (337)  
T Dec 04 (338)  
W Dec 05 (339)  
T Dec 06 (340)  
F Dec 07 (341)  
S Dec 08 (342)  
S Dec 09 (343)  

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

M Dec 10 (344)  
T Dec 11 (345)  
W Dec 12 (346)  
T Dec 13 (347)  
F Dec 14 (348)  
S Dec 15 (349)  
S Dec 16 (350)  

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

M Dec 17 (351)  
T Dec 18 (352)  
W Dec 19 (353)  Ahead:	Momentum dump, 17:00 UT
T Dec 20 (354)  
F Dec 21 (355)  
S Dec 22 (356)  
S Dec 23 (357)  

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


Upcoming events:

Behind events are contingent on recovering the spacecraft.

2019:

* Mar			Ahead:	Switch downlink rate to 240 kbps for 34 meter
* Mar 31-Apr 10		Parker Solar Probe perihelion pass
* Apr			Behind:	Switch downlink rate to 240 kbps for 34 meter
* Aug 28-Sep 7		Parker Solar Probe perihelion pass
* Nov 4			Ahead:	Close approach of Parker Solar Probe

2020:

* 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
* 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
* 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
* 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
* 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
* 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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