18 March 2021
⇐20210317 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210319⇒

NOAA
3 Active Regions
12810
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 W01S52
(11",-684") 		E84-W41
(125) 		14.3 -1.4 -4.4e21
2 E09N12
(-143",314") 		E23-W10
(33) 		1.9 0.1 2.5e19
3 E19S16
(-303",-159") 		E21-E17
(4) 		0.1 2.7 4.2e19
4 W26S05
(423",26") 		W24-W29
(5) 		0.1 -1.7 -2.5e19
5 W30S00
(480",102") 		W27-W32
(5) 		0.1 -1.5 -2.4e19
6 W52S00
(761",65") 		W49-W55
(6) 		0.1 0.6 9.7e18
7 W61S59
(435",-792") 		W55-W72
(17) 		0.1 -1.7 -3.9e19
8 W07S07
(109",6") 		W05-W08
(3) 		0.0 2.7 2.0e19

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 18-Mar-2021 20:30 UT .