13 August 2019
⇐20190812 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190814⇒

NOAA
1 Active Region
12747

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 W02N67
(15",828") 		E77-W80
(157) 		4.0 1.4 1.8e21
2 W12S15
(197",-352") 		E06-W25
(31) 		2.2 0.2 8.0e19
3 W30S01
(479",-104") 		W18-W38
(20) 		1.5 -0.1 -2.8e19
4 E37S61
(-280",-864") 		E68-W16
(84) 		1.3 -0.4 -2.7e20
5 W04N30
(58",376") 		E03-W08
(11) 		0.4 -1.0 -6.2e19
6 E25S37
(-316",-652") 		E30-E19
(11) 		0.2 -0.5 -1.8e19
7 E16N16
(-252",164") 		E19-E12
(7) 		0.1 -1.2 -1.8e19
8 W24S14
(372",-318") 		W21-W26
(5) 		0.1 -2.0 -3.2e19
9 E06S02
(-99",-145") 		E07-E05
(2) 		0.1 -1.5 -1.4e19
10 W09N43
(108",567") 		W06-W12
(6) 		0.1 -1.0 -9.6e18
11 E41S43
(-457",-700") 		E44-E38
(6) 		0.0 -0.7 -8.9e18

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 13-Aug-2019 23:30 UT .