25 February 2021
⇐20210224 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210226⇒

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 E20S48
(-223",-643") 		E26-W26
(52) 		5.6 -1.6 -2.0e21
2 E08N56
(-76",862") 		E22-W40
(62) 		1.8 0.6 3.6e20
3 E59S14
(-804",-177") 		E69-E47
(22) 		0.5 0.8 1.2e20
4 E19N04
(-324",175") 		E29-E08
(21) 		0.5 -1.0 -7.6e19
5 W13S12
(217",-83") 		W12-W14
(2) 		0.0 -1.0 -7.6e18

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 25-Feb-2021 20:30 UT .