18 August 2019
⇐20190817 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190819⇒

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 W09S13
(138",-321") 		E34-W46
(80) 		10.3 -0.3 -5.1e20
2 W18N71
(94",859") 		E90-W70
(160) 		2.7 1.2 1.2e21
3 W10S58
(87",-855") 		90
(9.0e04) 		-0.8 3.3 3.0e21
4 E04S16
(-67",-374") 		E06-E01
(5) 		0.1 -1.3 -2.3e19
5 W41N19
(585",223") 		W39-W43
(4) 		0.1 -1.2 -1.4e19

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 18-Aug-2019 23:40 UT .