13 December 2021
⇐20211212 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211214⇒

NOAA
2 Active Regions
12905
12904

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 E04S49
(-43",-733") 		E50-W25
(75) 		4.9 -1.2 -1.3e21
2 W32N09
(509",169") 		W09-W50
(41) 		2.7 -0.3 -1.4e20
3 E04S06
(-75",-85") 		E14-W12
(26) 		2.3 0.3 1.1e20
4 W35N65
(236",888") 		E52-W54
(106) 		2.0 0.9 7.7e20
5 E40S37
(-495",-582") 		E49-E35
(14) 		0.4 -0.4 -4.1e19
6 W27S19
(420",-309") 		W23-W32
(9) 		0.2 -1.1 -4.2e19
7 E45S22
(-636",-364") 		E52-E38
(14) 		0.1 -3.1 -1.0e20
8 E62S53
(-514",-778") 		E78-E52
(26) 		0.1 -1.5 -8.8e19
9 E41N01
(-645",20") 		E44-E38
(6) 		0.1 -0.5 -6.2e18
10 W24N02
(395",43") 		2
(6.1e02) 		-2.1 4.4 2.7e19

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 13-Dec-2021 20:30 UT .