3 February 2013
⇐20130202 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130204⇒

NOAA
5 Active Regions
11662
11663
11665
11667
11668

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N30
(-182",577") 		E36-W16
(52) 		3.7 -2.8 -4.1e33
2 E50S37
(-601",-529") 		E60-E35
(25) 		1.8 3.2 5.0e33
3 W25S16
(391",-171") 		W18-W32
(14) 		0.7 1.1 2.1e32
4 W42S06
(647",-26") 		W37-W48
(11) 		0.5 -1.5 -3.1e32
5 E06S30
(-96",-391") 		E10-E01
(9) 		0.3 8.9 6.7e32
6 E28S18
(-442",-207") 		E34-E23
(11) 		0.3 15.9 1.2e33

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 3-Feb-2013 22:00 UT .