7 January 2018
⇐20180106 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180108⇒

NOAA
1 Active Region
12693

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 W16N52
(163",808") 		E46-W44
(90) 		5.1 0.8 4.1e33
2 W01S71
(3",-898") 		E52-W81
(133) 		2.0 -1.3 -4.9e33
3 E34N16
(-522",314") 		E47-E15
(32) 		1.6 0.8 5.4e32
4 W14S11
(240",-127") 		W10-W18
(8) 		0.3 -1.8 -1.1e32

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 7-Jan-2018 20:30 UT .