15 May 2021
⇐20210514 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210516⇒

NOAA
2 Active Regions
12822
12823

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 E06S41
(-78",-594") 		E30-W27
(57) 		20.3 -0.5 -1.8e21
2 E14N30
(-194",508") 		E16-E09
(7) 		0.3 -0.6 -3.1e19
3 W35S32
(459",-476") 		W30-W38
(8) 		0.1 -1.0 -3.4e19
4 E47S58
(-362",-793") 		E53-E38
(15) 		0.1 -0.3 -7.5e18
5 E32S31
(-427",-465") 		E33-E30
(3) 		0.0 -0.8 -6.8e18

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 15-May-2021 23:30 UT .