23 February 2021
⇐20210222 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210224⇒

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 E50S38
(-594",-527") 		E66-E46
(20) 		1.8 -1.0 -4.9e20
2 E10N63
(-78",914") 		E45-W50
(95) 		1.3 0.7 4.1e20
3 W69S63
(414",-837") 		W63-W78
(15) 		0.5 -0.9 -2.6e20
4 W62S31
(736",-443") 		W53-W69
(16) 		0.3 -2.1 -1.9e20
5 E54S63
(-355",-828") 		E59-E71
(-12) 		0.2 -0.8 -7.9e19

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-Feb-2021 12:30 UT .