14 August 2021
⇐20210813 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210815⇒

NOAA
4 Active Regions
12852
12853
12854
12855

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 E13S07
(-219",-222") 		E36-W25
(61) 		3.1 -0.1 -4.0e19
2 W39N68
(222",843") 		E90-W74
(164) 		2.8 0.8 9.2e20
3 E31S03
(-488",-135") 		E34-E28
(6) 		0.1 -0.8 -1.9e19
4 W07N04
(108",-45") 		W04-W08
(4) 		0.1 -1.6 -2.5e19
5 E45S23
(-619",-439") 		E48-E41
(7) 		0.1 -1.4 -3.0e19
6 E11N23
(-174",271") 		E13-E10
(3) 		0.0 -3.6 -2.2e19

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 14-Aug-2021 23:30 UT .