13 April 2019
⇐20190412 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190414⇒

NOAA
1 Active Region
12738

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 W33S67
(207",-845") 		E56-W78
(134) 		3.4 -1.2 -6.6e21
2 E04N61
(-32",877") 		E48-W47
(95) 		2.3 0.6 2.5e21
3 W45S45
(477",-629") 		W44-W49
(5) 		0.1 -0.3 -1.7e19
4 W19S30
(274",-397") 		W17-W22
(5) 		0.0 -0.7 -9.2e18
5 E73S70
(-310",-886") 		E79-E66
(13) 		0.0 -0.7 -2.0e20

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 13-Apr-2019 22:00 UT .