16 December 2018
⇐20181215 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181217⇒

NOAA
2 Active Regions
12731
12730

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 W10S23
(149",-360") 		E29-W36
(65) 		15.2 -0.1 -5.3e20
2 W25S65
(173",-876") 		E66-W65
(131) 		2.6 -1.1 -5.3e21
3 E19N67
(-123",906") 		E64-W64
(128) 		1.6 0.7 3.0e21
4 W46S16
(673",-251") 		W39-W53
(14) 		0.3 -0.7 -1.0e20
5 W48S47
(496",-705") 		W41-W56
(15) 		0.2 -0.9 -2.2e20
6 W30S28
(428",-445") 		W27-W31
(4) 		0.1 -0.8 -3.5e19
7 W34N05
(549",92") 		W31-W37
(6) 		0.1 -1.1 -4.0e19
8 E51S05
(-757",-66") 		E54-E47
(7) 		0.1 -1.1 -6.5e19
9 W50N52
(464",771") 		W47-W59
(12) 		0.1 -0.4 -5.9e19

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 16-Dec-2018 20:30 UT .