6 October 2021
⇐20211005 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211007⇒

NOAA
3 Active Regions
12880
12882
12878

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 E23N64
(-169",811") 		E88-W93
(181) 		3.2 0.9 8.2e20
2 E05S00
(-81",-114") 		E18-W14
(32) 		2.7 0.1 6.2e19
3 E39S20
(-576",-400") 		E48-E29
(19) 		1.2 0.6 1.7e20
4 E07N25
(-105",307") 		E11-W00
(11) 		0.3 5.5 2.8e20
5 W22S68
(135",-920") 		E00-W27
(27) 		0.3 -0.7 -1.3e20
6 E00S01
(-1",-128") 		E02-W02
(4) 		0.0 -1.4 -7.6e18

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 6-Oct-2021 19:30 UT .