18 October 2010
⇐20101017 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20101019⇒

NOAA
4 Active Regions
11112
11113
11115
11116

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E05N22
(-77",268") 		E13-W06
(19) 		1.1 -2.3 -5.5e32
2 E48N07
(-708",59") 		E58-E40
(18) 		0.6 -0.5 -1.5e32
3 E65N12
(-858",159") 		E71-E62
(9) 		0.1 -2.9 -6.2e32
4 E52N13
(-737",159") 		E57-E48
(9) 		0.1 -2.5 -1.3e32

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 18-Oct-2010 23:30 UT .