16 March 2021
⇐20210315 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210317⇒

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 E20S54
(-189",-711") 		E58-W87
(145) 		10.8 -1.6 -4.1e21
2 W39N32
(516",586") 		W35-W43
(8) 		0.5 1.2 1.6e20
3 E29N03
(-468",151") 		E30-E27
(3) 		0.0 -0.7 -5.9e18
4 W24S14
(388",-120") 		W23-W26
(3) 		0.0 -2.5 -1.7e19
5 E33N14
(-517",324") 		E35-E31
(4) 		0.0 -0.7 -5.2e18

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 16-Mar-2021 12:30 UT .