20 June 2012
⇐20120619 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120621⇒

NOAA
5 Active Regions
11504
11506
11507
11508
11510

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E69N44
(-631",653") 		E79-E60
(19) 		0.4 0.4 6.4e32
2 E26S21
(-384",-363") 		E32-E14
(18) 		0.4 9.8 1.3e33
3 E06S31
(-81",-509") 		E10-E00
(10) 		0.3 0.9 8.6e31
4 W37N27
(507",414") 		W33-W42
(9) 		0.2 -3.5 -2.8e32
5 W12N17
(182",250") 		W09-W13
(4) 		0.1 3.0 6.2e31

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 20-Jun-2012 23:00 UT .