25 November 2021
⇐20211124 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211126⇒

NOAA
3 Active Regions
12896
12897
12898

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 E02N61
(-16",838") 		E60-W44
(104) 		4.1 0.8 9.7e20
2 W29S14
(453",-261") 		W11-W39
(28) 		1.8 -1.5 -4.7e20
3 E35N14
(-546",217") 		E40-E27
(13) 		1.0 1.4 2.7e20
4 E16N31
(-237",475") 		E21-E09
(12) 		0.2 0.6 2.2e19
5 E58N45
(-584",674") 		E59-E55
(4) 		0.2 0.3 1.8e19
6 E19N14
(-313",214") 		E21-E17
(4) 		0.1 1.4 2.0e19
7 W45S00
(693",-22") 		W43-W48
(5) 		0.1 -1.1 -1.8e19
8 E19N26
(-291",400") 		E21-E16
(5) 		0.1 -2.1 -2.7e19
9 W01N08
(9",117") 		E01-W02
(3) 		0.1 -1.1 -1.2e19

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 25-Nov-2021 20:30 UT .