26 October 2023
⇐20231025 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20231027⇒

NOAA
4 Active Regions
13468
13471
13467
13470

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N27
(-184",363") 		E21-W05
(26) 		6.2 5.3 5.3e21
2 W57N11
(798",134") 		W54-W62
(8) 		0.2 -0.4 -2.5e19
3 E02S35
(-31",-622") 		E06-W03
(9) 		0.1 5.7 1.3e20
4 E17N56
(-156",753") 		E21-E11
(10) 		0.1 -2.6 -4.1e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 26-Oct-2023 23:30 UT .