28 September 2020
⇐20200927 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200929⇒

NOAA
1 Active Region
12773

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 W33N52
(323",692") 		E73-W56
(129) 		7.3 1.0 1.9e21
2 W28S10
(439",-271") 		W09-W44
(35) 		2.4 0.1 3.7e19
3 E25S13
(-396",-318") 		E36-E14
(22) 		1.6 -0.0 -1.3e18
4 W05S70
(30",-932") 		E22-W30
(52) 		0.2 -0.8 -1.3e20
5 E40S07
(-618",-202") 		E43-E38
(5) 		0.1 0.6 1.1e19
6 W36N06
(561",14") 		5
(9.0e02) 		-1.9 2.8 2.5e19
7 W24N04
(396",-42") 		W22-W27
(5) 		0.0 -1.0 -7.2e18

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 28-Sep-2020 23:30 UT .