20 November 2017
⇐20171119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171121⇒

NOAA
2 Active Regions
12687
12688

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 E09N65
(-61",867") 		E75-W43
(118) 		3.3 0.8 4.0e33
2 W51N15
(732",223") 		W41-W64
(23) 		1.4 1.0 1.0e33
3 E06N18
(-93",270") 		E09-W00
(9) 		0.3 -1.1 -7.6e31
4 E49N07
(-730",96") 		E54-E44
(10) 		0.1 -2.4 -1.5e32
5 W04N34
(55",513") 		W02-W06
(4) 		0.1 -0.9 -2.2e31

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-Nov-2017 20:30 UT .