There is a problem with the motor controlling the High Gain Antenna on the SOHO spacecraft. Science data coverage may be less than complete for 1-2 weeks every 90 days (when the spacecraft gets 'flipped'). The next "keyhole" period can be found in this table.
Most Recent Shock Candidates:
Dates
13 Nov 2022
03 Nov 2022
29 Oct 2022
UT
0412
1858
0050
day of year
317
307
302
F/R
REV
REV
REV
Zone
2
2
2
Confidence Level
25%
25%
25%
The predicted position of the SOHO spacecraft in the GSE coordinate system (X,Y,Z) in Earth radii at 0610 GMT on Oct 15, 2020:
( 200, -82, 8 )
The Proton Monitor (PM) is one of the scientific sensors in the Charge, Element, and Isotope Analysis System (CELIAS) instrument package aboard the SOHO spacecraft.