13 April 2017
⇐20170412 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170414⇒

NOAA
2 Active Regions
12650
12648

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 E30S21
(-442",-258") 		E50-W04
(54) 		3.3 0.8 8.5e32
2 W11N59
(97",867") 		E47-W64
(111) 		2.6 0.8 3.8e33
3 W42S72
(202",-881") 		E46-W86
(132) 		1.7 -1.1 -5.5e33
4 W30S26
(435",-339") 		W17-W39
(22) 		0.8 1.2 3.3e32
5 W03S15
(51",-150") 		E00-W05
(5) 		0.1 4.4 6.7e31
6 W04S09
(60",-55") 		E00-W06
(6) 		0.0 -4.5 -2.9e31

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-Apr-2017 19:30 UT .