5 January 2019
⇐20190104 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190106⇒

NOAA
1 Active Region
12732

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 W29S31
(411",-463") 		W08-W41
(33) 		3.2 -0.7 -9.1e20
2 E30S65
(-208",-858") 		E54-W67
(121) 		2.8 -0.9 -4.1e21
3 W24N10
(397",223") 		W12-W38
(26) 		2.0 -0.4 -2.2e20
4 W48S17
(692",-243") 		W25-W70
(45) 		1.7 -0.7 -7.0e20
5 E13S17
(-202",-230") 		E18-E06
(12) 		0.3 1.2 8.8e19
6 E13S04
(-214",-7") 		E14-E11
(3) 		0.1 -1.7 -2.3e19
7 E12N08
(-207",195") 		E14-E10
(4) 		0.0 -1.4 -1.2e19

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 5-Jan-2019 20:30 UT .