9 May 2019
⇐20190508 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190510⇒

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 W04S62
(32",-811") 		E75-W78
(153) 		3.9 -1.0 -4.1e21
2 E48N66
(-290",880") 		E72-W22
(94) 		1.0 0.8 5.1e21
3 W18S19
(285",-255") 		W17-W21
(4) 		0.1 -0.8 -1.1e19

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-May-2019 22:00 UT .