23 March 2019
⇐20190322 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190324⇒

NOAA
2 Active Regions
12736
12735

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 W14S18
(217",-184") 		E05-W25
(30) 		4.5 -0.5 -5.0e20
2 E10S67
(-65",-839") 		E87-W74
(161) 		3.8 -1.0 -4.4e21
3 E27S11
(-424",-81") 		E44-E02
(42) 		3.6 -0.4 -4.0e20
4 E20S32
(-279",-418") 		E35-E06
(29) 		1.8 -0.9 -5.3e20
5 W05N57
(48",868") 		E17-W20
(37) 		1.7 0.7 1.9e21
6 E14N17
(-231",383") 		E25-W11
(36) 		1.5 0.0 9.6e18
7 E33N64
(-224",904") 		E54-E20
(34) 		0.3 1.0 1.2e21
8 W04S32
(55",-409") 		E01-W07
(8) 		0.1 -0.8 -2.8e19
9 E44S12
(-658",-113") 		E48-E40
(8) 		0.1 -0.5 -2.0e19
10 W21N15
(341",348") 		W20-W23
(3) 		0.1 -1.4 -2.8e19

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 23-Mar-2019 20:30 UT .