13 May 2018
⇐20180512 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180514⇒

NOAA
2 Active Regions
12709
12708

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 E11S24
(-163",-345") 		E32-W15
(47) 		5.9 -0.5 -7.0e32
2 W27S21
(405",-300") 		W14-W40
(26) 		1.6 -0.1 -4.0e31
3 W04N69
(22",903") 		E45-W54
(99) 		0.9 0.9 2.5e33
4 E43S73
(-185",-900") 		E63-E20
(43) 		0.3 -0.8 -1.0e33
5 W40S12
(597",-167") 		W35-W43
(8) 		0.2 -0.6 -4.4e31
6 E26S19
(-395",-262") 		E28-E24
(4) 		0.1 -0.7 -1.6e31
7 W11S26
(156",-370") 		W08-W13
(5) 		0.0 -0.7 -9.3e30

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 13-May-2018 23:10 UT .