5 July 2021
⇐20210704 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210706⇒

NOAA
4 Active Regions
12835
12837
12839
12836

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 E04N61
(-31",801") 		E76-W81
(157) 		4.7 0.8 1.2e21
2 E24S18
(-361",-338") 		E40-E10
(30) 		2.8 -0.2 -1.3e20
3 E50S13
(-706",-254") 		E73-E31
(42) 		2.2 -0.4 -2.3e20
4 E13S68
(-80",-897") 		E48-W11
(59) 		0.5 -1.1 -3.1e20
5 E09N30
(-130",417") 		E12-E05
(7) 		0.5 1.8 1.5e20
6 E57S04
(-790",-92") 		E59-E54
(5) 		0.0 -0.4 -5.7e18
7 E25S04
(-402",-116") 		E28-E23
(5) 		0.0 -1.4 -8.7e18

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 5-Jul-2021 19:30 UT .