18 November 2023
⇐20231117 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20231119⇒

NOAA
4 Active Regions
13486
13489
13487
13488

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 W06N12
(101",164") 		19
(2.4e04) 		1.6 7.3 1.7e21
2 E22S38
(-286",-632") 		E30-E14
(16) 		0.6 -2.6 -3.6e20
3 E03N21
(-51",315") 		E06-W04
(10) 		0.4 7.0 5.1e20
4 W06N63
(46",850") 		E05-W10
(15) 		0.3 -0.3 -2.5e19
5 W37N33
(494",495") 		W30-W44
(14) 		0.2 -10.2 -4.1e20
6 W03N30
(37",456") 		E00-W04
(4) 		0.0 -9.9 -5.9e19

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 18-Nov-2023 20:30 UT .