8 October 2021
⇐20211007 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211009⇒

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 E14S13
(-228",-308") 		E28-W09
(37) 		5.0 0.4 3.3e20
2 W12N70
(69",861") 		E90-W34
(124) 		2.0 0.9 6.5e20
3 E40S09
(-604",-235") 		E53-E27
(26) 		1.5 -0.0 -9.1e18
4 W23S13
(370",-309") 		W20-W27
(7) 		0.2 4.8 1.7e20

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 8-Oct-2021 19:30 UT .