16 October 2021
⇐20211015 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211017⇒

NOAA
2 Active Regions
12882
12885

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 E03S35
(-37",-627") 		E45-W49
(94) 		13.7 -1.1 -3.1e21
2 W06N71
(34",876") 		E73-W79
(152) 		2.7 1.0 9.9e20
3 W17N33
(240",442") 		E02-W30
(32) 		1.7 1.8 5.7e20
4 E29S43
(-339",-713") 		E37-E23
(14) 		0.1 0.9 3.2e19
5 W14N01
(229",-72") 		W12-W16
(4) 		0.1 1.0 1.6e19

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 16-Oct-2021 23:30 UT .