26 July 2019
⇐20190725 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190727⇒

NOAA
1 Active Region
12745

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 W31S14
(472",-297") 		W02-W48
(46) 		4.9 -0.2 -1.8e20
2 E28S06
(-446",-175") 		E41-E14
(27) 		3.2 -1.7 -9.5e20
3 W01N70
(6",853") 		E72-W55
(127) 		3.0 1.2 1.3e21
4 E14S65
(-99",-890") 		E51-W37
(88) 		1.1 -0.6 -3.3e20
5 E03S09
(-42",-242") 		E04-E01
(3) 		0.1 -1.3 -1.8e19
6 W12N21
(177",256") 		W10-W14
(4) 		0.0 -0.9 -6.8e18

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 26-Jul-2019 23:30 UT .