27 July 2018
⇐20180726 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180728⇒

NOAA
1 Active Region
12716

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 E02N63
(-16",802") 		E86-W34
(120) 		4.9 1.0 5.2e33
2 E24S04
(-382",-148") 		E35-E13
(22) 		2.2 0.0 8.0e30
3 W23S59
(187",-849") 		E38-W43
(81) 		2.2 -0.9 -3.8e33
4 W37S21
(534",-409") 		W21-W56
(35) 		1.6 -0.7 -5.8e32
5 W37S43
(418",-699") 		W31-W41
(10) 		0.4 -0.7 -2.7e32
6 W45N04
(671",3") 		W42-W49
(7) 		0.0 -1.1 -2.7e31
7 E25N20
(-381",252") 		E27-E24
(3) 		0.0 -0.8 -1.0e31

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-Jul-2018 17:00 UT .