28 December 2019
⇐20191227 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191229⇒

NOAA
2 Active Regions
12753
12754

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 E07S64
(-53",-862") 		E79-W44
(123) 		4.1 -0.8 -4.3e21
2 W04N08
(60",179") 		E12-W13
(25) 		3.1 0.0 1.8e19
3 E21N10
(-340",217") 		E34-E04
(30) 		2.5 -0.1 -5.2e19
4 W04S20
(70",-299") 		E17-W16
(33) 		1.6 -0.5 -1.7e20
5 E31N67
(-195",915") 		E66-W09
(75) 		0.7 1.0 2.8e21
6 W27S28
(397",-420") 		W24-W31
(7) 		0.1 -0.9 -3.0e19
7 E12S20
(-189",-292") 		E14-E10
(4) 		0.1 -1.1 -1.4e19

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 28-Dec-2019 20:30 UT .