28 December 2020
⇐20201227 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201229⇒

NOAA
2 Active Regions
12794
12795

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 W18N14
(297",282") 		E04-W34
(38) 		1.8 -0.2 -4.6e19
2 E29N70
(-164",930") 		E48-W25
(73) 		0.7 0.8 3.3e20
3 E31N36
(-411",609") 		E38-E23
(15) 		0.6 2.9 4.3e20
4 W41S17
(619",-255") 		W37-W48
(11) 		0.3 -3.4 -2.3e20

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 28-Dec-2020 20:30 UT .