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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 is expected from 10 May - 22 May, 2008. |
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Most Recent Shock Candidates: |
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Date |
UT |
day of year |
F/R |
Zone |
Confidence Level |
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4 Apr 2008 |
2307 |
95 |
fwd |
1 |
42% |
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27 Mar 2008 |
1138 |
87 |
fwd |
1 |
42% |
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10 Feb 2008 |
2229 |
41 |
fwd |
3 |
92% |
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| The Proton Monitor (PM) is one of the scientific sensors on the SOHO spacecraft. | What's being plotted?? |
| the PM sensor | |
| the SOHO Spacecraft |
| The predicted position of the SOHO spacecraft
in the GSE coordinate system (X,Y,Z) in Earth radii
at 1720 GMT on May 11, 2008: |
Daily Orbit Data: Launch through 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
| ( 199, -20, 16) |
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