20 December 2020
⇐20201219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201221⇒

NOAA
2 Active Regions
12792
12793

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 W10N43
(124",687") 		E33-W53
(86) 		18.8 0.6 2.3e21
2 W37S71
(192",-915") 		E47-W70
(117) 		1.1 -0.8 -4.5e20
3 E35S08
(-549",-111") 		E38-E31
(7) 		0.1 1.5 3.7e19
4 E39N07
(-616",134") 		E43-E36
(7) 		0.0 -0.9 -8.3e18

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 20-Dec-2020 20:30 UT .