5 August 2018
⇐20180804 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180806⇒

NOAA
1 Active Region
12717

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 W04N68
(22",832") 		E88-W79
(167) 		4.3 1.1 6.0e21
2 W23N26
(331",328") 		E04-W35
(39) 		2.9 0.2 1.6e20
3 E19N09
(-303",60") 		E29-E04
(25) 		2.6 -0.1 -3.8e19
4 E37S03
(-567",-126") 		E43-E31
(12) 		0.5 -1.8 -3.5e20
5 E50S08
(-720",-190") 		E56-E43
(13) 		0.5 -1.0 -3.2e20
6 W53S21
(707",-391") 		W47-W58
(11) 		0.1 -0.6 -4.5e19

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 5-Aug-2018 23:10 UT .