22 December 2018
⇐20181221 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181223⇒

NOAA
1 Active Region
12731

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E32N11
(-507",217") 		E47-E16
(31) 		2.7 1.2 1.2e21
2 E14S67
(-93",-889") 		E67-W62
(129) 		1.8 -1.1 -3.7e21
3 W01N68
(7",915") 		E57-W71
(128) 		1.4 1.1 3.9e21
4 W27N10
(435",203") 		W18-W34
(16) 		0.6 -1.2 -2.1e20
5 E09S10
(-144",-139") 		E12-E03
(9) 		0.6 1.2 1.4e20
6 E51N26
(-681",439") 		E57-E43
(14) 		0.5 0.3 1.7e20
7 W29N24
(433",423") 		W26-W32
(6) 		0.1 -0.6 -1.5e19

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-2018 20:30 UT .