9 October 2019
⇐20191008 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191010⇒

NOAA
1 Active Region
12749

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 E12N68
(-73",847") 		E83-W88
(171) 		3.0 1.2 1.2e21
2 E18S17
(-279",-377") 		E29-W01
(30) 		2.9 -0.4 -1.9e20
3 W23S63
(166",-896") 		E05-W54
(59) 		0.8 -0.6 -2.1e20
4 E33S60
(-261",-874") 		E62-E15
(47) 		0.7 -0.3 -9.1e19
5 E08S41
(-103",-711") 		E14-E03
(11) 		0.2 -0.8 -4.0e19
6 W37N31
(490",426") 		W35-W39
(4) 		0.0 -1.6 -1.6e19
7 W33N01
(531",-74") 		W32-W35
(3) 		0.0 -1.6 -1.3e19
8 E19S33
(-265",-603") 		E23-E16
(7) 		0.0 -4.1 -3.5e19

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 9-Oct-2019 23:40 UT .