21 August 2020
⇐20200820 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200822⇒

NOAA
2 Active Regions
12772
12771

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 W26N01
(411",-83") 		W04-W47
(43) 		5.1 -0.3 -2.4e20
2 E19N59
(-162",748") 		E80-W27
(107) 		4.9 0.6 8.4e20
3 E22N16
(-345",157") 		E34-W04
(38) 		2.0 -0.1 -3.8e19
4 W16S19
(249",-412") 		W13-W19
(6) 		0.2 -1.4 -4.1e19
5 E29S66
(-184",-903") 		E47-E24
(23) 		0.1 -0.8 -6.0e19
6 W10S29
(140",-557") 		W07-W12
(5) 		0.1 -1.0 -1.4e19
7 E45S64
(-288",-885") 		E57-E35
(22) 		0.1 -0.8 -3.9e19
8 E09N45
(-109",590") 		E13-E06
(7) 		0.1 -0.5 -5.6e18

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-Aug-2020 19:00 UT .