1 February 2018
⇐20180131 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180202⇒

NOAA
1 Active Region
12697

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 E05N47
(-55",784") 		E51-W64
(115) 		6.6 0.7 3.8e33
2 W11S73
(57",-895") 		E85-W86
(171) 		2.1 -1.2 -4.8e33
3 E21S52
(-211",-704") 		E31-E09
(22) 		0.5 -0.9 -2.7e32
4 E14S29
(-204",-378") 		E17-E10
(7) 		0.1 -3.2 -7.3e31
5 W27S10
(442",-86") 		W25-W29
(4) 		0.0 -0.8 -1.1e31

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 1-Feb-2018 20:30 UT .