18 March 2020
⇐20200317 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200319⇒

NOAA
1 Active Region
12758

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 E03S63
(-24",-796") 		E36-W67
(103) 		6.7 -1.1 -6.5e21
2 E20N64
(-148",907") 		E36-W04
(40) 		0.6 0.7 1.3e21
3 E45S18
(-645",-218") 		E48-E40
(8) 		0.1 1.6 8.1e19
4 W25N18
(387",399") 		W22-W27
(5) 		0.1 -0.8 -2.2e19
5 W12N67
(78",925") 		W08-W24
(16) 		0.1 1.5 4.0e20
6 W19N11
(316",290") 		W18-W21
(3) 		0.0 -1.0 -1.1e19

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-2020 20:30 UT .