8 August 2021
⇐20210807 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210809⇒

NOAA
2 Active Regions
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 W21N10
(342",60") 		E08-W38
(46) 		6.2 -0.2 -1.7e20
2 E13N62
(-103",783") 		E69-W76
(145) 		5.5 0.7 1.1e21
3 E06N22
(-98",255") 		E17-W13
(30) 		1.6 0.4 8.8e19
4 W02S41
(30",-693") 		E14-W15
(29) 		1.2 -1.8 -4.8e20
5 W35S20
(511",-402") 		W25-W44
(19) 		0.8 -2.3 -3.9e20
6 E23S44
(-265",-722") 		E34-E16
(18) 		0.7 -0.9 -1.6e20
7 E33S67
(-204",-899") 		E53-W15
(68) 		0.5 -0.5 -1.8e20
8 W62S05
(835",-123") 		W57-W70
(13) 		0.2 -0.8 -4.4e19
9 W05N45
(58",590") 		E01-W07
(8) 		0.1 0.7 1.4e19
10 E28N43
(-326",580") 		E31-E25
(6) 		0.1 -0.8 -1.0e19
11 W46S14
(661",-303") 		W43-W49
(6) 		0.1 -3.0 -3.9e19

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 8-Aug-2021 23:30 UT .