SIDC - Solar Influences Data analysis Center

Welcome to the Solar Influences Data Analysis Center (SIDC), which is the solar physics research department of the Royal Observatory of Belgium. The SIDC includes the World Data Center for the sunspot index and the ISES Regional Warning Center Brussels for space weather forecasting.

Legal notices

The following documents and statements apply to all ROB/STCE/SIDC websites and other services:

Terms of us (ENG/ FR/ NL)
Cookie declaration (ENG/ FR/ NL)
Data policy ( ENG/ FR/ NL)
Privacy policy (ENG/ FR/ NL)
Disclaimer (ENG/ FR/ NL)

Latest SWAP image

Latest USET H-alpha image

Latest LYRA curve

Latest Callisto Observations

Daily estimated sunspot number

Latest News

Nov 29, 2012 : Our dynamic Sun

Nov 23, 2012 : The Sun has a split personality

Nov 14, 2012 : Press release: Observations of the total solar eclipse from space and Australia coordinated by Belgian scientists

Nov 10, 2012 : Has SC24-maximum passed?

Nov 02, 2012 : 15 X-flares for SC24

click here for all the news items

Good to know

7th Solar Information Processing Workshop - Registration and abstract submission is OPEN, August 17-22, 2014

ESWW11, 17-21 November, 2014 - Abstract submission is OPEN

STCE Workshop - Long Term Solar Changes and their effect on Earth, May 19, 2014

STCE Workshop - Physical processes in solar-terrestrial plasmas, May 22 - 23, 2014

STCE Workshop - Modelling antennas & calibration of radio instruments, June 6, 2014

STCE 2014 annual meeting, June 12, 2014