Sunspot region AR 4517

Sunspot AR 4517 is a moderate-sized, magnetically basic active region visible on the Sun. It contains 6 spots and covers 110 millionths of the solar hemisphere. This region has produced no significant flares. Current flare probabilities are C 0%, M 0% and X 0%. Its heliographic latitude is N9°, Earth-facing longitude -99° and Carrington longitude 69°.

Sunspot location on the solar map

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Selected map type: AIA 171 Å

Sunspot properties

Region number	4517
First observed	22 August 2026 at 08:50
Sunspot type	Dao
Magnetic class	B
Area	110 MSH
Spot count	6
Heliographic extent	10 degrees
Latitude	9°
Longitude	-99°
Carrington longitude	69
Status	d

Flare activity

No flares detected.

Sunspot evolution

These graphs show how the region’s area and visible spot count changed over time.

Area

Area is measured in millionths of the solar hemisphere (MSH); growth can indicate increasing magnetic complexity.

Spot count

The spot count records the visible spots in the region at each observation.

Detailed history

Date	Area (MSH)	Spot count	Classification	flares	Location

Acknowledgments

We thank the teams behind the Solar Dynamics Observatory (SDO), including the HMI, AIA and EVE teams, for continuous solar monitoring.

We also thank National Aeronautics and Space Administration (NASA), Goddard Space Flight Center (GSFC), National Oceanic and Atmospheric Administration (NOAA) for supporting solar science and public data access.

Additional event data are provided by NASA’s DONKI (Database of Notifications, Knowledge, Information), with records of flares, CMEs and geomagnetic storms.

Observation Settings