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the latest 48 hours of solar wind data

brought to you by the CELIAS/MTOF Proton Monitor on the SOHO Spacecraft

ISSI video: 25 Years of SOHO and First Glimpses of Parker Solar Probe and Solar Orbiter

talking sun

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.

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Most Recent Shock Candidates:

Dates

17 May 2024

11 May 2024

10 May 2024

UT

1249

1749

2139

day of year

138

132

131

F/R

fwd

fwd

fwd

Zone

4

3

1

Confidence Level

99%

98%

60%

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Current time in UTC Solar Wind Bulk Speed Solar Wind Density Solar Wind Thermal Speed Solar Wind NS Angle
Data ending at 1645 GMT on May 29, 2024 (2 minute ascii data)
Two Day PM Plot
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Data ending at 2359 GMT on May 28, 2024 (15 minute ascii data)
Two Week PM Plot
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Where is SoHO?

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:

( 201, -50, 13 )

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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.

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