23 November 2021
⇐20211122 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211124⇒

NOAA
2 Active Regions
12896
12897

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 W09N00
(160",-23") 		E10-W24
(34) 		4.1 -0.4 -2.8e20
2 E19N64
(-136",863") 		E75-W25
(100) 		3.0 0.8 8.1e20
3 E27N43
(-322",645") 		E34-E22
(12) 		0.4 0.5 4.2e19
4 W43S61
(319",-864") 		W52-W59
(7) 		0.4 -0.7 -1.3e20
5 E13S17
(-211",-320") 		E18-E08
(10) 		0.3 -2.2 -1.2e20
6 W62S26
(772",-445") 		W57-W70
(13) 		0.2 -1.0 -7.0e19
7 W60S32
(718",-521") 		W55-W64
(9) 		0.1 -2.0 -8.2e19

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 23-Nov-2021 20:30 UT .