9 April 2015
⇐20150408 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150410⇒

NOAA
3 Active Regions
12318
12320
12319

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E31S71
(-161",-872") 		E84-W86
(170) 		2.5 -0.7 -3.4e33
2 E48S37
(-569",-521") 		E59-E32
(27) 		2.0 -1.7 -2.6e33
3 W16N13
(258",312") 		W10-W20
(10) 		0.3 -3.5 -2.8e32
4 W49N03
(727",117") 		W43-W57
(14) 		0.3 -1.2 -2.2e32
5 E33N26
(-476",495") 		E38-E28
(10) 		0.1 3.5 2.4e32

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-2015 23:35 UT .