22 July 2018
⇐20180721 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180723⇒

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 W05S23
(73",-443") 		E40-W43
(83) 		9.6 -0.6 -1.6e21
2 E11S58
(-94",-841") 		E66-W34
(100) 		2.7 -0.8 -3.1e21
3 W44N65
(273",831") 		E31-W74
(105) 		2.2 1.1 4.9e21
4 E55N54
(-453",738") 		E56-E44
(12) 		0.5 0.6 5.2e20
5 W35S49
(359",-752") 		W30-W39
(9) 		0.2 -0.7 -1.6e20
6 E45S48
(-447",-742") 		E48-E38
(10) 		0.1 -1.9 -2.9e20
7 W02S09
(31",-226") 		3
(1.4e03) 		-1.0 5.3 7.4e19

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 22-Jul-2018 23:10 UT .