26 May 2018
⇐20180525 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180527⇒

NOAA
3 Active Regions
12711
12712
12710

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 W23N52
(235",755") 		E69-W46
(115) 		6.0 0.6 3.2e33
2 W01S65
(9",-849") 		E75-W66
(141) 		3.6 -1.0 -5.3e33
3 E47S11
(-678",-165") 		E67-E27
(40) 		2.2 -1.9 -2.4e33
4 W22S32
(304",-480") 		W07-W37
(30) 		2.0 -0.1 -1.0e32
5 E32S37
(-406",-550") 		E40-E22
(18) 		1.0 -0.7 -3.7e32
6 W04S48
(42",-692") 		E01-W07
(8) 		0.1 -2.0 -9.5e31
7 W26N08
(414",152") 		W23-W29
(6) 		0.1 1.3 3.0e31
8 E25S25
(-366",-381") 		E27-E23
(4) 		0.0 -0.9 -1.3e31

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 26-May-2018 15:30 UT .