21 May 2020
⇐20200520 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200522⇒

NOAA
0 Active Regions

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 W02S02
(28",-7") 		E30-W31
(61) 		4.5 0.2 1.5e20
2 W21S23
(320",-344") 		E04-W35
(39) 		3.7 -0.3 -2.9e20
3 W02S66
(10",-853") 		E76-W52
(128) 		3.2 -0.9 -4.5e21
4 E10S27
(-152",-406") 		E18-W03
(21) 		0.6 -0.7 -1.2e20
5 E19N66
(-126",875") 		E48-E01
(47) 		0.5 0.8 1.0e21
6 W19N69
(109",897") 		E04-W33
(37) 		0.5 0.7 1.1e21
7 W53S38
(602",-568") 		W48-W60
(12) 		0.1 -0.6 -1.1e20
8 W47S31
(594",-463") 		W43-W51
(8) 		0.1 -1.0 -8.1e19

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 21-May-2020 19:30 UT .