24 February 2021
⇐20210223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210225⇒

NOAA
3 Active Regions
12804
12805
12803

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 E40S45
(-441",-621") 		E48-E29
(19) 		4.7 -1.2 -1.4e21
2 E25N54
(-243",844") 		E32-E02
(30) 		1.3 0.8 3.8e20
3 W42N04
(651",148") 		W39-W45
(6) 		0.1 -0.9 -1.7e19
4 W15N13
(237",329") 		W12-W16
(4) 		0.1 -1.1 -1.2e19
5 E30S03
(-487",51") 		E32-E28
(4) 		0.1 -1.1 -1.2e19

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 24-Feb-2021 20:30 UT .