30 September 2020
⇐20200929 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201001⇒

NOAA
1 Active Region
12773

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 W08S12
(136",-310") 		E08-W22
(30) 		2.2 -0.0 -1.5e19
2 W53N67
(304",847") 		W28-W63
(35) 		0.8 0.7 2.4e20
3 W58N37
(651",525") 		W49-W71
(22) 		0.6 1.2 2.1e20
4 W22N77
(84",903") 		E10-W79
(89) 		0.2 0.8 1.0e20
5 E25S68
(-151",-921") 		E46-E06
(40) 		0.2 -0.7 -1.1e20
6 W07S66
(49",-915") 		E04-W21
(25) 		0.2 -1.5 -1.5e20
7 E45S54
(-405",-813") 		E56-E34
(22) 		0.2 -0.6 -5.2e19
8 W31N05
(499",-13") 		5
(8.5e02) 		-1.4 1.8 1.5e19

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 30-Sep-2020 23:30 UT .