1 April 2019
⇐20190331 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190402⇒

NOAA
1 Active Region
12737

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 W05S42
(66",-565") 		E54-W41
(95) 		18.9 -0.5 -3.8e21
2 E67S68
(-332",-869") 		E74-E50
(24) 		0.2 -0.3 -2.7e20
3 W37S01
(583",70") 		W36-W39
(3) 		0.0 -0.9 -1.3e19

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 1-Apr-2019 19:30 UT .