7 July 2021
⇐20210706 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210708⇒

NOAA
4 Active Regions
12835
12837
12839
12840

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 E34S22
(-487",-406") 		E78-W19
(97) 		10.7 -0.6 -1.4e21
2 E03N65
(-19",828") 		E55-W39
(94) 		3.3 0.9 9.2e20
3 E45N04
(-669",24") 		E52-E38
(14) 		0.6 -0.9 -1.2e20
4 W19S73
(92",-916") 		E05-W29
(34) 		0.2 -0.7 -9.6e19
5 E50S05
(-718",-121") 		E54-E46
(8) 		0.1 -1.1 -2.1e19
6 E09S03
(-155",-106") 		E11-E07
(4) 		0.0 -1.6 -9.6e18

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 7-Jul-2021 19:30 UT .