17 November 2021
⇐20211116 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211118⇒

NOAA
4 Active Regions
12894
12896
12897
12895

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 E16S43
(-191",-695") 		E38-W39
(77) 		9.3 -1.0 -2.0e21
2 W42S32
(553",-538") 		W14-W57
(43) 		2.1 -1.9 -9.9e20
3 E22N06
(-357",59") 		E32-E09
(23) 		1.8 0.2 6.2e19
4 E08S10
(-131",-217") 		E10-E06
(4) 		0.1 2.8 3.4e19
5 W45N03
(686",21") 		W42-W47
(5) 		0.1 -1.9 -2.4e19
6 W14S24
(216",-430") 		W12-W16
(4) 		0.1 -3.6 -3.6e19

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 17-Nov-2021 20:30 UT .