19 October 2020
⇐20201018 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201020⇒

NOAA
2 Active Regions
12776
12777

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 E08N50
(-82",680") 		E33-W40
(73) 		11.4 0.5 1.3e21
2 W24S31
(340",-568") 		W12-W33
(21) 		1.2 -0.9 -2.3e20
3 E49N40
(-553",574") 		E60-E37
(23) 		1.1 0.5 1.5e20
4 W11S65
(76",-906") 		E28-W34
(62) 		1.0 -0.7 -3.2e20
5 W47S60
(354",-861") 		W51-W66
(15) 		0.2 -0.4 -4.7e19
6 W35S07
(552",-189") 		W32-W38
(6) 		0.1 -0.8 -1.3e19
7 E03N11
(-55",91") 		E05-E01
(4) 		0.0 -1.7 -1.1e19
8 W33S31
(447",-565") 		W30-W36
(6) 		0.0 -0.6 -5.0e18

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 19-Oct-2020 19:30 UT .