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Sky-Tonight.com / Sun / Sunspots / Sunspot Region 4455

Sunspot AR 4455

Sunspot AR 4455 is a large, magnetically complex active region currently visible on the Sun’s surface. It contains 20 visible spots and spans an area of 310 millionths of the solar hemisphere. This region has produced 2 C-class flares, 5 M-class flares, 1 X-class flare so far and currently shows a 60% probability of C-class, 25% of M-class, and 5% of X-class flares. It is located at heliographic latitude N15°, Earth-facing longitude -34°, and Carrington longitude 89°.

Sunspot Location on Map

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Selected map type: AIA 171 Å

Sunspot Properties

Region Number4455
First Observed2026-05-27 08:28
Sunspot TypeDki
Magnetic ClassBG
Area310 MSH
Number of Spots20
Extent7 heliographic degrees
Latitude15°
Longitude-34°
Carrington Longitude89
Statusf

Flare Activity

Flare Class Begin Time (UTC) Peak Time (UTC) End Time (UTC) Location Duration
X1.02026-06-03 02:192026-06-03 02:282026-06-03 02:35N14W169 minutes
M7.72026-06-02 21:492026-06-02 22:002026-06-02 22:07N14W1311 minutes
M9.32026-06-02 16:222026-06-02 16:362026-06-02 16:43N13W1014 minutes
M3.32026-06-02 07:312026-06-02 07:502026-06-02 07:56N13W0519 minutes
M1.22026-06-02 00:512026-06-02 01:052026-06-02 01:19N11E0114 minutes
C3.12026-06-01 21:462026-06-01 21:592026-06-01 22:05N15E0113 minutes
C1.82026-06-01 17:402026-06-01 17:502026-06-01 17:59N15E0910 minutes
M1.12026-05-28 21:402026-05-28 22:042026-05-28 22:24N14E6224 minutes

Sunspot Evolution

The following graphs show how this sunspot region 4455 has changed over time. The first graph displays its total area on the solar surface, while the second shows the number of individual sunspots observed within the region.

Sunspot Area

Area 0 496

This graph illustrates the physical growth of the sunspot region, measured in millionths of the solar hemisphere (MSH). Increases in area typically indicate developing magnetic complexity and potential for solar activity.

Spot Count

Sunspots 0 22

This graph shows the number of visible sunspots within the region at each observation time. A higher spot count often corresponds with a more active or complex region.

Detailed History

Date Area (MSH) Spot Count Classification Flares Location
2026-06-0431020Dki-N15W34
2026-06-0336017DkiX1.0, 02:19-02:35N14W21
2026-06-0230012CkoX1.0, 02:19-02:35N13W05
2026-06-0130010Cko-N15E11
2026-05-313206Cko-N15E24
2026-05-3030010Dho-N15E38
2026-05-293705EkoX1.0, 02:19-02:35N15E52
2026-05-283803Dho-N15E65
2026-05-274502Hax-N14E78

Acknowledgements

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

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

Additional event data is provided by NASA’s DONKI (Database of Notifications, Knowledge, Information), which offers alerts and detailed records of solar flares, CMEs, and geomagnetic storms.