29 May 2018
⇐20180528 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180530⇒

NOAA
2 Active Regions
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 E16S19
(-254",-292") 		E41-W19
(60) 		6.8 -1.5 -2.5e33
2 W17S59
(139",-807") 		E66-W66
(132) 		3.2 -0.9 -3.4e33
3 W38N67
(231",874") 		W09-W53
(44) 		0.8 0.6 1.8e33
4 E47N64
(-304",855") 		E56-E40
(16) 		0.4 0.8 1.0e33
5 E41N47
(-426",699") 		E45-E38
(7) 		0.2 0.5 1.1e32
6 W28S36
(365",-541") 		W24-W34
(10) 		0.2 -0.9 -7.3e31

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 29-May-2018 15:30 UT .