13 January 2020
⇐20200112 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200114⇒

NOAA
1 Active Region
12755

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 W25S68
(154",-880") 		E80-W64
(144) 		2.9 -1.1 -5.7e21
2 W29N59
(246",867") 		E38-W42
(80) 		1.6 0.7 2.2e21
3 W33N25
(490",462") 		W22-W44
(22) 		1.3 0.8 5.2e20
4 E34S15
(-524",-195") 		E39-E29
(10) 		0.3 -0.8 -7.3e19
5 E41S13
(-620",-169") 		E44-E37
(7) 		0.1 -0.8 -3.4e19
6 W32S46
(363",-652") 		W27-W36
(9) 		0.1 -0.7 -3.6e19
7 W15N21
(234",411") 		W12-W17
(5) 		0.1 -1.0 -2.0e19
8 W38N10
(598",230") 		W36-W41
(5) 		0.1 -0.5 -1.3e19
9 W11N45
(130",744") 		W07-W13
(6) 		0.1 -1.2 -4.9e19
10 E34N33
(-454",581") 		E36-E30
(6) 		0.0 -0.9 -2.4e19
11 W15S32
(215",-454") 		W13-W17
(4) 		0.0 -1.6 -1.8e19

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 13-Jan-2020 20:30 UT .