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

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

27 Aug 2021

12 Jun 2021

26 May 2021

UT

0028

1537

1153

day of year

239

163

146

F/R

fwd

fwd

fwd

Zone

2

1

4

Confidence Level

77%

60%

99%

Current time in UTC Solar Wind Bulk Speed Solar Wind Density Solar Wind Thermal Speed Solar Wind NS Angle
Data ending at 1715 GMT on September 25, 2021 (2 minute ascii data)
Two Day PM Plot
Solar Wind Bulk Speed Solar Wind Density Solar Wind Thermal Speed Solar Wind NS Angle
Data ending at 2357 GMT on September 24, 2021 (15 minute ascii data)
Two Week PM Plot

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:

( 256, 49, -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.