29 January 2020
⇐20200128 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200130⇒

NOAA
1 Active Region
12757

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 E08S13
(-138",-131") 		E37-W25
(62) 		8.5 -0.1 -2.1e20
2 E13S66
(-87",-852") 		E85-W66
(151) 		4.8 -0.9 -5.5e21
3 W27S40
(338",-561") 		W10-W35
(25) 		2.0 -0.4 -3.7e20
4 W12N70
(67",945") 		E16-W28
(44) 		0.2 1.4 1.9e21
5 W48S28
(643",-400") 		W45-W51
(6) 		0.1 -0.4 -1.8e19
6 W27N24
(407",473") 		W24-W29
(5) 		0.0 -1.0 -2.0e19

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 29-Jan-2020 20:30 UT .