21 March 2016
⇐20160320 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160322⇒

NOAA
4 Active Regions
12519
12524
12523
12525

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 W28N32
(380",598") 		E13-W48
(61) 		6.2 2.5 9.1e33
2 W20S70
(114",-861") 		E71-W81
(152) 		3.2 -1.6 -8.2e33
3 E55N19
(-751",374") 		E61-E46
(15) 		0.6 3.7 2.8e33
4 E45N61
(-330",877") 		E65-E12
(53) 		0.5 0.4 1.1e33
5 E58N43
(-598",699") 		E61-E65
(-4) 		0.2 -0.4 -2.3e32

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 21-Mar-2016 19:30 UT .