31 August 2014
⇐20140830 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140901⇒

NOAA
5 Active Regions
12149
12150
12151
12152
12153

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24N52
(-243",673") 		E70-W39
(109) 		6.0 0.3 1.0e33
2 W35N03
(544",-48") 		W29-W41
(12) 		0.4 11.3 1.6e33
3 W47S07
(689",-196") 		W41-W54
(13) 		0.4 9.7 2.1e33
4 E28S63
(-201",-888") 		E41-E23
(18) 		0.1 -0.6 -3.4e32
5 W09N26
(141",306") 		W08-W12
(4) 		0.1 8.9 2.3e32

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 31-Aug-2014 20:00 UT .