23 July 2018
⇐20180722 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180724⇒

NOAA
1 Active Region
12716

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 W23S25
(342",-468") 		E30-W44
(74) 		8.1 -0.6 -2.0e21
2 E14S57
(-123",-837") 		E63-W56
(119) 		2.6 -0.8 -2.9e21
3 W41N67
(241",843") 		E54-W77
(131) 		2.2 1.4 6.6e21
4 E43N57
(-352",759") 		E62-E53
(9) 		1.4 0.8 1.5e21
5 E34S45
(-368",-718") 		E36-E28
(8) 		0.2 -1.0 -2.6e20
6 W06S29
(88",-534") 		W03-W09
(6) 		0.1 -1.0 -1.8e19
7 E24S01
(-378",-97") 		E26-E21
(5) 		0.0 -1.0 -1.3e19

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 23-Jul-2018 23:10 UT .