20 September 2018
⇐20180919 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180921⇒

NOAA
1 Active Region
12722

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 E11N64
(-78",799") 		E87-W27
(114) 		4.8 1.0 4.5e21
2 E18S16
(-286",-378") 		E33-W01
(34) 		3.3 -0.3 -2.8e20
3 W25S60
(198",-876") 		E13-W53
(66) 		1.0 -0.2 -6.6e20
4 W15S04
(253",-181") 		W11-W20
(9) 		0.2 -1.2 -4.2e19
5 W46S27
(610",-503") 		W42-W48
(6) 		0.1 -1.1 -8.8e19
6 E45N06
(-668",21") 		4
(1.8e03) 		-2.5 4.7 8.5e19

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 20-Sep-2018 23:10 UT .