19 August 2020
⇐20200818 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200820⇒

NOAA
2 Active Regions
12772
12771

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 E15S01
(-244",-124") 		E40-W23
(63) 		9.5 -0.2 -2.9e20
2 E36N56
(-312",729") 		E50-E41
(9) 		2.9 0.6 5.0e20
3 W51N71
(243",865") 		E33-W90
(123) 		1.1 1.7 8.9e20
4 W32S64
(220",-887") 		W13-W48
(35) 		0.4 -0.9 -2.4e20
5 W40S07
(606",-207") 		W33-W44
(11) 		0.2 -1.1 -4.5e19
6 E23S29
(-330",-549") 		E29-E19
(10) 		0.2 -0.6 -2.4e19
7 E18S20
(-276",-417") 		E20-E14
(6) 		0.1 -1.3 -2.8e19
8 W33S02
(512",-121") 		W30-W35
(5) 		0.1 -1.0 -1.2e19
9 W57S20
(744",-382") 		W54-W60
(6) 		0.1 -0.8 -1.4e19
10 E50N48
(-487",649") 		E51-E47
(4) 		0.0 -1.5 -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 19-Aug-2020 11:00 UT .