30 January 2019
⇐20190129 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190131⇒

NOAA
1 Active Region
12733

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 W12S15
(199",-157") 		E33-W46
(79) 		18.0 -0.5 -1.9e21
2 W01S72
(7",-891") 		E78-W61
(139) 		2.6 -1.1 -5.0e21
3 E43N06
(-658",174") 		E50-E32
(18) 		0.8 -0.5 -2.0e20
4 W40N57
(345",853") 		W42-W67
(25) 		0.3 0.8 7.4e20
5 W38S04
(605",15") 		W33-W43
(10) 		0.2 -1.2 -1.0e20
6 W14N17
(228",373") 		W12-W16
(4) 		0.1 -0.9 -1.4e19
7 E01N22
(-22",458") 		E03-W01
(4) 		0.0 -0.8 -1.0e19
8 W53S17
(749",-228") 		W51-W57
(6) 		0.0 -1.3 -3.8e19

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 30-Jan-2019 20:30 UT .