27 August 2019
⇐20190826 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190828⇒

NOAA
0 Active Regions

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 E27N19
(-404",212") 		E49-W08
(57) 		6.0 1.4 1.4e21
2 E17S16
(-270",-373") 		E30-E07
(23) 		2.4 1.1 4.5e20
3 E42N67
(-248",832") 		E66-W25
(91) 		2.3 0.9 8.4e20
4 W44S09
(657",-232") 		W39-W51
(12) 		0.5 -2.1 -2.5e20
5 W04N52
(39",672") 		E02-W06
(8) 		0.1 1.8 3.3e19
6 E17N40
(-215",527") 		E19-E15
(4) 		0.0 -2.7 -1.8e19

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 27-Aug-2019 23:40 UT .