9 December 2018
⇐20181208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181210⇒

NOAA
1 Active Region
12729

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 E03S57
(-24",-820") 		E65-W44
(109) 		4.8 -0.7 -3.4e21
2 W33S25
(480",-415") 		W02-W59
(57) 		2.7 -0.3 -3.6e20
3 E17N69
(-102",912") 		E69-W53
(122) 		1.4 0.9 3.1e21
4 W58S23
(762",-378") 		W50-W66
(16) 		0.5 -0.7 -4.1e20
5 E48N56
(-398",813") 		E59-E36
(23) 		0.5 0.3 2.8e20
6 W53S09
(775",-145") 		W46-W62
(16) 		0.4 -0.7 -2.5e20
7 W59N02
(838",42") 		W56-W62
(6) 		0.0 -2.3 -1.0e20

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 9-Dec-2018 20:30 UT .