22 December 2012
⇐20121221 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121223⇒

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 E20N03
(-340",87") 		E30-E05
(25) 		1.5 -3.9 -1.3e33
2 W11N59
(98",856") 		E04-W19
(23) 		0.4 0.4 2.3e32
3 W29N58
(250",841") 		W18-W39
(21) 		0.4 0.4 2.7e32
4 E47S50
(-462",-731") 		E52-E38
(14) 		0.2 -1.2 -3.7e32
5 E12N44
(-151",699") 		E16-E09
(7) 		0.1 -0.7 -3.0e31

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 22-Dec-2012 22:00 UT .