20 October 2020
⇐20201019 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201021⇒

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 E24N54
(-230",733") 		E74-W57
(131) 		10.3 0.9 2.4e21
2 E06N19
(-92",235") 		E35-W34
(69) 		9.1 0.2 2.2e20
3 W32S65
(216",-904") 		E09-W49
(58) 		0.6 -0.6 -2.1e20
4 E14S27
(-212",-513") 		E18-E10
(8) 		0.2 -0.6 -2.5e19
5 W39S33
(516",-576") 		W35-W45
(10) 		0.1 -0.5 -1.6e19

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 20-Oct-2020 23:30 UT .