17 July 2019
⇐20190716 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190718⇒

NOAA
1 Active Region
12744

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 E16S46
(-176",-733") 		E40-W52
(92) 		8.2 -0.5 -9.7e20
2 W22N64
(153",816") 		E58-W83
(141) 		3.7 1.0 1.2e21
3 W30S17
(454",-342") 		W18-W43
(25) 		2.3 -0.1 -5.2e19
4 W18N29
(260",402") 		W13-W23
(10) 		0.4 -0.8 -5.0e19
5 E43N15
(-621",188") 		E46-E40
(6) 		0.1 -0.7 -1.2e19
6 E46N20
(-639",271") 		E49-E43
(6) 		0.0 -1.0 -1.0e19
7 W39N32
(501",455") 		W37-W41
(4) 		0.0 -0.5 -4.9e18
8 W23N24
(343",317") 		W22-W25
(3) 		0.0 -2.1 -1.5e19
9 W50S04
(719",-118") 		W47-W53
(6) 		0.0 1.8 1.7e19

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 17-Jul-2019 23:30 UT .