17 February 2013
⇐20130216 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130218⇒

NOAA
6 Active Regions
11671
11672
11673
11675
11676
11677

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E49S47
(-502",-649") 		E82-E03
(79) 		1.3 -2.3 -3.0e33
2 W18S39
(228",-525") 		E02-W24
(26) 		1.0 -3.8 -1.4e33
3 E34N25
(-490",502") 		E37-E30
(7) 		0.2 -4.4 -4.2e32
4 W14S08
(236",-13") 		W11-W17
(6) 		0.2 -1.5 -5.3e31
5 E18S12
(-290",-99") 		E21-E15
(6) 		0.1 2.0 5.3e31
6 W11S11
(189",-69") 		W10-W13
(3) 		0.0 -6.5 -4.5e31
7 W22S21
(340",-242") 		W21-W23
(2) 		0.0 -2.3 -2.1e31

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 17-Feb-2013 22:00 UT .