30 September 2018
⇐20180929 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181001⇒

NOAA
1 Active Region
12723

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 W22N69
(129",854") 		E89-W90
(179) 		3.6 1.2 6.9e21
2 E05S11
(-87",-299") 		E13-W10
(23) 		2.4 -1.3 -6.9e20
3 E56S04
(-795",-128") 		E66-E48
(18) 		0.7 1.3 8.0e20
4 W32N14
(491",130") 		W29-W34
(5) 		0.1 -0.6 -1.2e19

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 30-Sep-2018 23:10 UT .