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.
Dates
01 Feb 2022
27 Dec 2021
27 Nov 2021
UT
2142
0851
2206
day of year
032
361
331
F/R
fwd
fwd
fwd
Zone
4
3
4
Confidence Level
99%
98%
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:
( 244, 80, -14 )
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.