30 March 2021
⇐20210329 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210331⇒

NOAA
2 Active Regions
12812
12811

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 E14N05
(-224",198") 		E49-W26
(75) 		12.9 0.3 5.6e20
2 W19S72
(97",-877") 		E85-W84
(169) 		1.9 -1.3 -9.2e20
3 E54S23
(-712",-321") 		E61-E46
(15) 		0.6 0.7 1.1e20
4 W27N12
(432",298") 		W25-W30
(5) 		0.1 -1.2 -1.8e19
5 E03N23
(-43",481") 		5
(1.4e03) 		-0.7 2.9 4.0e19
6 W27S06
(438",-8") 		W25-W30
(5) 		0.1 -0.7 -9.9e18

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 30-Mar-2021 11:30 UT .