Open Calendar
1 December 2018
⇐20181130 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181202⇒

NOAA
1 Active Region

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W13S16
(216",-280") 		E25-W43
(68) 		8.6 -0.0 -5.0e19
2 W36N29
(507",463") 		W12-W55
(43) 		3.5 0.7 1.3e21
3 E46S13
(-679",-234") 		E64-E25
(39) 		2.6 -0.8 -1.2e21
4 E10N67
(-69",889") 		E57-W23
(80) 		1.8 0.9 2.9e21
5 W58S05
(827",-92") 		W47-W69
(22) 		0.7 1.4 1.0e21
6 E25N07
(-412",112") 		E31-E18
(13) 		0.7 -0.7 -1.3e20
7 E52S32
(-652",-530") 		E58-E48
(10) 		0.1 -0.8 -1.1e20
8 E15N46
(-171",688") 		E19-E10
(9) 		0.1 -0.7 -3.1e19
9 W01S19
(22",-328") 		E01-W03
(4) 		0.0 -1.1 -1.2e19

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-Dec-2018 20:30 UT .