Sunspot region AR 4501

Sunspot AR 4501 is a small, magnetically basic active region visible on the Sun. It contains 3 spots and covers 40 millionths of the solar hemisphere. This region has produced no significant flares. Current flare probabilities are C 15%, M 1% and X 1%. Its heliographic latitude is S7°, Earth-facing longitude -68° and Carrington longitude 35°.

Sunspot location on the solar map

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Selected map type: AIA 171 Å

Sunspot properties

Region number	4501
First observed	29 July 2026 at 09:24
Sunspot type	Cso
Magnetic class	B
Area	40 MSH
Spot count	3
Heliographic extent	4 degrees
Latitude	-7°
Longitude	-68°
Carrington longitude	35
Status	f

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
2026-08-04	40	3	Cso	-	S07W68
2026-08-03	100	7	Dso	-	S07W53
2026-08-02	90	7	Dso	-	S07W42
2026-08-01	70	6	Dao	-	S07W27
2026-07-31	40	8	Cao	-	S08W12
2026-07-30	20	8	Dso	-	S08E03
2026-07-29	20	5	Dro	-	S09E16

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), the Goddard Space Flight Center (GSFC), and the 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