27 May 2021
⇐20210526 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210528⇒

NOAA
3 Active Regions
12824
12826
12825

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 E24S04
(-379",-48") 		E61-W35
(96) 		11.1 -0.0 -6.6e19
2 E19N63
(-138",850") 		E39-E00
(39) 		1.1 1.1 4.8e20
3 E41N30
(-537",491") 		E51-E30
(21) 		0.4 -0.4 -3.5e19
4 W12S76
(45",-916") 		E11-W40
(51) 		0.1 -1.9 -1.6e20
5 E01S26
(-9",-398") 		E02-W01
(3) 		0.0 1.5 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 27-May-2021 23:30 UT .