2 October 2013
⇐20131001 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20131003⇒

NOAA
4 Active Regions
11850
11854
11855
11851

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W12N59
(104",761") 		E13-W34
(47) 		1.9 0.1 1.1e32
2 E43S24
(-600",-462") 		E53-E36
(17) 		0.2 7.4 9.9e32
3 E08N35
(-105",463") 		E10-E04
(6) 		0.1 2.6 9.3e31
4 E33N60
(-259",781") 		E40-E28
(12) 		0.1 -0.4 -4.8e31

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 2-Oct-2013 23:35 UT .