4 April 2015
⇐20150403 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150405⇒

NOAA
6 Active Regions
12317
12318
12312
12313
12314
12316

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W46N42
(507",700") 		E08-W56
(64) 		2.9 2.1 9.6e33
2 W19S73
(91",-883") 		E80-W87
(167) 		2.2 -0.8 -3.6e33
3 W52S06
(750",-40") 		W45-W58
(13) 		0.6 6.7 3.0e33
4 E23S00
(-376",95") 		E28-E17
(11) 		0.5 -1.7 -2.0e32

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 4-Apr-2015 23:35 UT .