26 July 2020
⇐20200725 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200727⇒

NOAA
1 Active Region
12767

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 E32N25
(-453",323") 		E64-W01
(65) 		7.4 0.2 2.2e20
2 W31N01
(489",-61") 		E01-W59
(60) 		5.2 -0.2 -2.2e20
3 W01N66
(4",823") 		E76-W82
(158) 		3.8 0.9 1.1e21
4 W14S57
(129",-834") 		E37-W41
(78) 		2.1 -0.5 -3.7e20
5 W16N34
(218",456") 		W09-W23
(14) 		0.6 0.7 7.3e19
6 W31S29
(428",-524") 		W22-W36
(14) 		0.4 -0.5 -4.5e19
7 E00S27
(-3",-501") 		E04-W05
(9) 		0.2 -2.8 -9.9e19
8 W18S09
(291",-228") 		W15-W22
(7) 		0.1 0.8 1.3e19
9 W05S23
(82",-451") 		W03-W07
(4) 		0.0 -0.9 -7.9e18

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 26-Jul-2020 19:00 UT .