24 December 2018
⇐20181223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181225⇒

NOAA
1 Active Region
12731

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 E16N14
(-262",268") 		E31-W21
(52) 		8.4 0.7 1.6e21
2 W10S69
(63",-898") 		E70-W75
(145) 		1.9 -1.0 -3.8e21
3 E02N68
(-10",921") 		E62-W34
(96) 		1.1 1.0 3.1e21
4 E43N52
(-408",787") 		E51-E30
(21) 		0.8 0.9 1.3e21

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 24-Dec-2018 20:30 UT .