15 July 2021
⇐20210714 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210716⇒

NOAA
3 Active Regions
12842
12843
12841

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 E01S01
(-10",-87") 		23
(3.4e04) 		-0.1 3.8 1.3e21
2 E33N67
(-205",842") 		E83-W20
(103) 		1.2 1.2 5.4e20
3 W51S36
(594",-592") 		W43-W65
(22) 		1.0 -1.3 -4.3e20
4 W50N68
(271",856") 		W19-W66
(47) 		1.0 1.1 5.5e20
5 W21S68
(129",-899") 		E44-W55
(99) 		0.6 -0.7 -2.5e20
6 W27N19
(401",243") 		W24-W29
(5) 		0.1 0.8 8.5e18
7 W46S53
(407",-787") 		W44-W46
(2) 		0.0 -1.7 -3.6e19

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 15-Jul-2021 19:30 UT .