16 July 2021
⇐20210715 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210717⇒

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 E24N64
(-168",819") 		E84-W05
(89) 		2.0 0.8 5.3e20
2 W61N68
(304",862") 		W59-W64
(5) 		0.4 1.0 2.1e20
3 W15S03
(244",-129") 		W12-W19
(7) 		0.2 -1.3 -4.8e19
4 E11S70
(-60",-910") 		E21-W02
(23) 		0.1 -1.5 -1.0e20
5 W16S71
(85",-913") 		W02-W31
(29) 		0.1 -0.5 -3.8e19
6 W31N06
(486",31") 		W29-W34
(5) 		0.1 -0.8 -9.5e18
7 W50S63
(331",-859") 		W52-W47
(-5) 		0.1 -0.7 -2.8e19
8 W02N20
(25",253") 		E00-W03
(3) 		0.1 5.9 5.5e19
9 E00S18
(-5",-358") 		E03-W02
(5) 		0.1 0.8 7.1e18
10 W24S03
(381",-113") 		W22-W25
(3) 		0.0 -1.7 -1.0e19

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 16-Jul-2021 19:30 UT .