7 August 2021
⇐20210806 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210808⇒

NOAA
3 Active Regions
12850
12851
12852

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 W12N01
(192",-93") 		E26-W39
(65) 		8.9 -0.5 -6.3e20
2 E11N60
(-90",770") 		E38-W66
(104) 		6.1 0.7 1.1e21
3 E18S50
(-184",-786") 		E61-W03
(64) 		1.9 -1.3 -7.4e20
4 W46S07
(676",-184") 		W33-W59
(26) 		1.1 -0.7 -1.8e20
5 E34S43
(-387",-709") 		E45-E21
(24) 		0.9 -0.7 -1.9e20
6 E12N24
(-174",291") 		E18-E03
(15) 		0.6 1.2 1.2e20
7 W51N13
(715",140") 		W43-W56
(13) 		0.4 -0.6 -5.2e19
8 E28N21
(-413",256") 		E31-E25
(6) 		0.3 1.5 9.3e19
9 W56S16
(757",-315") 		W51-W62
(11) 		0.1 -0.3 -1.4e19
10 E00N37
(-5",483") 		E02-W02
(4) 		0.0 -1.3 -9.9e18

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 7-Aug-2021 23:30 UT .