24 March 2019
⇐20190323 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190325⇒

NOAA
2 Active Regions
12736
12735

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 W01S12
(19",-79") 		E36-W37
(73) 		8.0 -0.4 -5.4e20
2 E12S61
(-96",-777") 		E81-W77
(158) 		5.4 -1.0 -4.3e21
3 W22N62
(169",892") 		E06-W54
(60) 		1.1 0.9 2.6e21

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 24-Mar-2019 20:30 UT .