21 October 2020
⇐20201020 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201022⇒

NOAA
1 Active Region
12776

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 E05N47
(-54",648") 		E63-W68
(131) 		16.0 0.7 2.2e21
2 E12S07
(-204",-198") 		E27-W16
(43) 		6.2 -0.0 -3.9e19
3 E03N24
(-42",315") 		E05-W02
(7) 		0.2 -1.1 -3.3e19
4 W42S66
(261",-905") 		W35-W62
(27) 		0.2 -0.8 -9.9e19
5 E23S33
(-310",-599") 		E26-E19
(7) 		0.2 -1.1 -3.6e19
6 E33S11
(-510",-262") 		E35-E30
(5) 		0.1 -0.7 -1.0e19
7 E49S07
(-719",-180") 		E52-E45
(7) 		0.1 -1.0 -1.5e19
8 E04S40
(-57",-683") 		E06-E02
(4) 		0.0 -1.3 -1.1e19

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-Oct-2020 23:30 UT .