5 February 2018
⇐20180204 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180206⇒

NOAA
3 Active Regions
12699
12697
12698

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 W02N46
(22",771") 		E48-W51
(99) 		8.1 0.9 5.3e33
2 W18S68
(109",-862") 		E73-W84
(157) 		3.8 -1.4 -7.7e33
3 W20N33
(283",612") 		W16-W25
(9) 		0.2 2.0 2.1e32
4 W17S26
(250",-339") 		W14-W19
(5) 		0.1 -1.2 -2.1e31
5 E30N33
(-405",602") 		E32-E28
(4) 		0.1 -1.2 -3.7e31

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 5-Feb-2018 20:30 UT .