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
24 Mar 2024
03 Mar 2024
24 Feb 2024
UT
1407
0835
1619
day of year
084
063
055
F/R
fwd
fwd
fwd
Zone
4
4
4
Confidence Level
99%
99%
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:
( 255, -52, -17 )
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.