30 January 2020
⇐20200129 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200131⇒

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 E05S17
(-85",-191") 		E49-W32
(81) 		14.7 -0.1 -3.8e20
2 E14S66
(-99",-847") 		E85-W67
(152) 		4.8 -1.1 -6.4e21
3 E48S41
(-549",-586") 		E54-E46
(8) 		1.0 -0.8 -6.4e20
4 E05N68
(-34",936") 		E30-W26
(56) 		0.3 1.3 1.7e21
5 E28S25
(-414",-335") 		E30-E25
(5) 		0.1 -0.8 -1.8e19
6 W27S41
(334",-567") 		W24-W31
(7) 		0.1 -1.3 -3.5e19

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 30-Jan-2020 20:30 UT .