2 July 2021
⇐20210701 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210703⇒

NOAA
3 Active Regions
12835
12836
12837

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 E36N66
(-229",844") 		E58-W04
(62) 		1.8 1.0 7.7e20
2 W50N76
(178",905") 		W18-W55
(37) 		0.2 0.9 1.3e20
3 W03S08
(55",-184") 		W01-W06
(5) 		0.2 -1.4 -3.4e19
4 E53S65
(-321",-865") 		E66-E50
(16) 		0.1 1.4 6.3e19
5 E50N33
(-606",480") 		E53-E47
(6) 		0.1 -1.5 -2.2e19

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 2-Jul-2021 23:30 UT .