30 December 2019
⇐20191229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191231⇒

NOAA
1 Active Region
12753

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 W17S12
(278",-151") 		E18-W45
(63) 		9.4 -0.1 -3.1e20
2 E10S64
(-76",-855") 		E74-W71
(145) 		4.4 -0.9 -5.0e21
3 E24S13
(-387",-175") 		E33-E14
(19) 		1.4 0.1 5.7e19
4 E09N68
(-54",924") 		E52-W32
(84) 		1.1 1.0 3.4e21
5 W36N01
(573",63") 		W32-W41
(9) 		0.1 0.5 2.6e19
6 W32S05
(520",-51") 		W30-W35
(5) 		0.0 -1.3 -1.9e19

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-Dec-2019 20:30 UT .