21 August 2018
⇐20180820 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180822⇒

NOAA
2 Active Regions
12719
12718

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 E23N55
(-215",709") 		E76-W18
(94) 		6.0 1.2 5.1e21
2 W14S29
(207",-549") 		25
(9.2e04) 		-0.4 5.1 4.7e21
3 W39S26
(535",-499") 		W26-W51
(25) 		1.8 -0.4 -5.3e20
4 E19S66
(-130",-903") 		E29-W17
(46) 		0.5 -1.1 -2.0e21
5 W58N02
(808",-19") 		W51-W66
(15) 		0.4 -1.8 -6.7e20
6 E08S26
(-117",-520") 		E10-E06
(4) 		0.1 -1.4 -4.6e19
7 E36N34
(-462",446") 		E38-E32
(6) 		0.1 -1.4 -4.7e19
8 E07S15
(-115",-354") 		E09-E05
(4) 		0.0 -1.3 -1.2e19

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 21-Aug-2018 23:10 UT .