1 June 2018
⇐20180531 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180602⇒

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 W09S07
(144",-113") 		E39-W51
(90) 		10.3 -0.9 -1.8e33
2 E10N59
(-88",816") 		E47-W53
(100) 		4.0 0.9 4.4e33
3 W33S71
(171",-889") 		E63-W64
(127) 		1.1 -1.1 -4.4e33
4 E11S39
(-135",-595") 		E16-E05
(11) 		0.2 -0.8 -8.7e31
5 W48S21
(660",-331") 		W42-W52
(10) 		0.2 -0.7 -1.1e32
6 E32N17
(-485",288") 		E33-E31
(2) 		0.0 -2.5 -4.1e31
7 E30N20
(-451",330") 		E31-E29
(2) 		0.0 -1.2 -1.6e31

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 1-Jun-2018 15:30 UT .