7 February 2013
⇐20130206 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130208⇒

NOAA
4 Active Regions
11665
11667
11669
11670

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W06S40
(81",-537") 		E16-W27
(43) 		2.5 2.9 2.5e33
2 E18S75
(-81",-905") 		E69-W54
(123) 		1.2 0.7 2.1e33
3 W48N31
(621",567") 		W27-W64
(37) 		1.1 -2.6 -3.3e33
4 E48S47
(-497",-656") 		E49-E40
(9) 		0.4 2.4 8.4e32
5 W54S27
(702",-379") 		W47-W61
(14) 		0.1 3.0 3.1e32
6 W25S18
(388",-209") 		W21-W29
(8) 		0.1 7.7 1.4e32

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 7-Feb-2013 22:00 UT .