27 October 2020
⇐20201026 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201028⇒

NOAA
1 Active Region
12778

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 W04S19
(64",-384") 		E24-W27
(51) 		6.0 0.0 1.7e19
2 W32N69
(184",875") 		E83-W80
(163) 		2.7 0.9 1.0e21
3 W05S69
(29",-928") 		E43-W41
(84) 		0.6 -0.8 -2.8e20
4 W50N45
(529",640") 		W35-W67
(32) 		0.5 0.5 7.6e19
5 E51S57
(-412",-832") 		E52-E41
(11) 		0.1 -0.5 -3.0e19
6 E24S21
(-367",-414") 		E26-E22
(4) 		0.1 -0.7 -9.7e18
7 W17N08
(286",57") 		W14-W21
(7) 		0.1 -0.9 -9.1e18

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 27-Oct-2020 20:30 UT .