1 October 2012
⇐20120930 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121002⇒

NOAA
7 Active Regions
11575
11577
11578
11579
11582
11583
11584

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E33N50
(-336",671") 		E46-E16
(30) 		2.3 0.7 1.1e33
2 W40N60
(306",784") 		W13-W53
(40) 		1.5 0.1 2.1e32
3 E33N26
(-469",328") 		E44-E23
(21) 		0.6 -0.7 -1.6e32
4 E19N09
(-313",43") 		E25-E13
(12) 		0.4 1.7 1.7e32
5 E65S08
(-858",-177") 		E70-E60
(10) 		0.2 -2.1 -6.7e32
6 W03N30
(42",385") 		5
(1.6e03) 		-2.6 12.1 1.9e32

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 1-Oct-2012 21:00 UT .