9 April 2017
⇐20170408 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170410⇒

NOAA
1 Active Region
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 W23S67
(149",-838") 		E81-W86
(167) 		3.9 -1.4 -7.4e33
2 E17N64
(-125",897") 		E63-W37
(100) 		1.4 0.9 3.6e33
3 W29N29
(412",534") 		W22-W39
(17) 		0.8 0.7 2.8e32

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 9-Apr-2017 19:30 UT .