24 December 2012
⇐20121223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121225⇒

NOAA
3 Active Regions
11633
11634
11635

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W13N03
(223",88") 		E02-W23
(25) 		2.6 -2.4 -1.3e33
2 E20S49
(-217",-719") 		E26-W01
(27) 		0.7 -2.3 -1.1e33
3 E43N45
(-472",709") 		E46-E44
(2) 		0.2 -0.3 -7.4e31
4 E15S21
(-231",-315") 		E18-E10
(8) 		0.2 -2.6 -1.2e32
5 W33S46
(366",-680") 		W25-W39
(14) 		0.1 -2.3 -1.3e32
6 E19S25
(-292",-390") 		E22-E17
(5) 		0.0 -12.7 -1.7e32

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-2012 22:00 UT .