Sunspot region AR 4498

Sunspot AR 4498 is a moderate-sized, magnetically basic active region visible on the Sun. It contains 6 spots and covers 80 millionths of the solar hemisphere. This region has produced no significant flares. Current flare probabilities are C 20%, M 5% and X 1%. Its heliographic latitude is N14°, Earth-facing longitude -30° and Carrington longitude 357°.

Sunspot location on the solar map

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Selected map type: AIA 171 Å

Sunspot properties

Region number	4498
First observed	27 July 2026 at 09:40
Sunspot type	Dso
Magnetic class	B
Area	80 MSH
Spot count	6
Heliographic extent	4 degrees
Latitude	14°
Longitude	-30°
Carrington longitude	357
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	80	6	Dso	-	N14W30
2026-08-03	180	16	Dsi	-	N14W17
2026-08-02	120	17	Dsi	-	N15W03
2026-08-01	150	12	Dai	-	N14E10
2026-07-31	150	8	Dai	-	N14E22
2026-07-30	130	12	Cai	-	N14E37
2026-07-29	140	11	Dai	-	N14E50
2026-07-28	210	5	Cao	-	N14E62
2026-07-27	40	1	Hax	-	N14E76

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