8 May 2019
⇐20190507 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190509⇒

NOAA
2 Active Regions
12740
12741

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 E05S61
(-41",-802") 		E78-W67
(145) 		4.4 -0.8 -3.4e21
2 E34N70
(-179",909") 		E56-W29
(85) 		0.5 0.9 2.9e21
3 W31S13
(483",-169") 		W25-W38
(13) 		0.5 -0.6 -9.7e19
4 W63S58
(453",-789") 		W61-W63
(2) 		0.1 -0.6 -3.1e20
5 W37N18
(544",342") 		W34-W38
(4) 		0.1 -0.6 -4.1e19
6 E18S29
(-261",-408") 		E21-E15
(6) 		0.1 -1.2 -3.0e19
7 W24N25
(358",444") 		W23-W26
(3) 		0.0 -0.6 -8.5e18

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 8-May-2019 22:00 UT .