30 August 2017
⇐20170829 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170831⇒

NOAA
3 Active Regions
12672
12673
12674

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03N45
(35",578") 		E34-W35
(69) 		19.6 0.8 6.0e33
2 E12S17
(-187",-394") 		E20-E02
(18) 		0.9 0.7 1.9e32
3 W26S19
(388",-410") 		W22-W31
(9) 		0.6 1.0 2.2e32
4 E13S67
(-82",-912") 		E31-W14
(45) 		0.4 -1.1 -1.8e33
5 E28N19
(-418",207") 		E33-E23
(10) 		0.3 1.8 1.6e32

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 30-Aug-2017 19:30 UT .