13 March 2021
⇐20210312 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210314⇒

NOAA
2 Active Regions
12808
12809

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 W19N19
(295",418") 		E16-W46
(62) 		9.3 0.3 5.3e20
2 W11S64
(80",-811") 		E79-W63
(142) 		5.4 -0.8 -1.3e21
3 E61S29
(-742",-413") 		E67-E57
(10) 		0.7 -1.6 -3.7e20
4 E60S50
(-535",-700") 		E64-E57
(7) 		0.6 -0.7 -1.4e20
5 W03N58
(29",879") 		E08-W12
(20) 		0.4 1.0 1.3e20

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 13-Mar-2021 20:30 UT .