9 October 2021
⇐20211008 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211010⇒

NOAA
2 Active Regions
12882
12880

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 W16S11
(256",-281") 		E17-W42
(59) 		7.3 0.3 4.2e20
2 E29S03
(-469",-141") 		E41-E19
(22) 		2.1 -0.0 -1.1e19
3 W23N71
(123",874") 		E89-W45
(134) 		1.6 1.1 6.7e20
4 W38N24
(548",312") 		W35-W42
(7) 		0.1 2.9 4.1e19
5 E43N48
(-438",659") 		E47-E39
(8) 		0.1 -0.3 -5.2e18
6 E17S07
(-278",-222") 		E18-E15
(3) 		0.0 3.3 1.9e19

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 9-Oct-2021 23:30 UT .