24 September 2019
⇐20190923 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190925⇒

NOAA
0 Active Regions

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 E13N19
(-205",195") 		E35-W13
(48) 		8.6 1.1 1.5e21
2 E25N69
(-144",853") 		E74-W92
(166) 		3.5 1.1 1.3e21
3 W17N02
(278",-73") 		W15-W19
(4) 		0.1 -1.1 -1.3e19
4 W25S14
(398",-333") 		W22-W28
(6) 		0.1 -0.8 -1.1e19
5 E06S21
(-89",-454") 		E07-E04
(3) 		0.0 -1.7 -1.4e19
6 W23N46
(262",613") 		W22-W25
(3) 		0.0 -0.8 -6.9e18

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 24-Sep-2019 23:40 UT .