28 July 2015
⇐20150727 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150729⇒

NOAA
4 Active Regions
12389
12390
12391
12387

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N06
(-339",13") 		E29-E07
(22) 		1.3 -3.8 -1.2e33
2 E36S31
(-477",-547") 		E53-E25
(28) 		1.3 -2.8 -2.3e33
3 E03S19
(-53",-394") 		E07-W01
(8) 		0.2 -6.6 -4.2e32

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 28-Jul-2015 23:35 UT .