2 August 2021
⇐20210801 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210803⇒

NOAA
2 Active Regions
12847
12849

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 E28S13
(-428",-299") 		E57-W24
(81) 		8.5 -0.5 -7.3e20
2 E03N59
(-28",761") 		E87-W81
(168) 		6.2 1.0 1.6e21
3 W21S02
(333",-131") 		W19-W22
(3) 		0.1 -0.9 -1.3e19
4 E01S24
(-9",-473") 		E02-W02
(4) 		0.0 -1.9 -1.3e19
5 E26S71
(-134",-917") 		E42-E16
(26) 		0.0 -0.8 -2.3e19

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 2-Aug-2021 23:30 UT .