19 December 2019
⇐20191218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191220⇒

NOAA
0 Active Regions

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 E11S19
(-171",-295") 		E41-W32
(73) 		10.6 -0.3 -8.6e20
2 W25N58
(221",837") 		E04-W32
(36) 		2.2 0.6 1.8e21
3 E36S63
(-264",-858") 		E66-E46
(20) 		0.7 -0.6 -7.7e20
4 E26N67
(-166",906") 		E61-E07
(54) 		0.7 1.2 2.4e21
5 W31S70
(169",-912") 		E18-W52
(70) 		0.7 -0.9 -1.9e21
6 E15N30
(-215",507") 		E20-E07
(13) 		0.2 -0.9 -5.4e19
7 W42N04
(650",84") 		W39-W46
(7) 		0.1 -0.7 -3.0e19
8 W37N02
(590",49") 		W35-W39
(4) 		0.0 -1.3 -2.0e19
9 W10N28
(146",480") 		W07-W12
(5) 		0.0 1.7 1.9e19

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 19-Dec-2019 20:30 UT .