2 February 2013
⇐20130201 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130203⇒

NOAA
5 Active Regions
11662
11663
11665
11666
11667

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27N30
(-388",558") 		E52-W04
(56) 		4.1 -2.6 -5.3e33
2 E63S37
(-691",-550") 		E66-E50
(16) 		0.8 2.2 3.0e33
3 W11S15
(179",-155") 		W02-W17
(15) 		0.8 2.0 3.2e32
4 W26S07
(424",-17") 		W18-W31
(13) 		0.7 -2.7 -4.9e32
5 W06S57
(56",-762") 		E06-W13
(19) 		0.4 0.4 1.0e32
6 E55S74
(-218",-916") 		E80-E31
(49) 		0.4 0.5 8.8e32
7 E42S17
(-619",-210") 		E45-E37
(8) 		0.1 6.3 4.1e32
8 W02N07
(36",218") 		E01-W04
(5) 		0.1 -4.6 -9.8e31

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 2-Feb-2013 22:00 UT .