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
19 Aug 2022
08 Aug 2022
23 Jul 2022
UT
1711
0153
0229
day of year
231
220
204
F/R
fwd
REV
fwd
Zone
2
2
4
Confidence Level
77%
25%
99%
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:
( 262, -5, -19 )
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.