27 December 2017
⇐20171226 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171228⇒

NOAA
1 Active Region
12692

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 E06S18
(-96",-265") 		E30-W33
(63) 		7.2 0.2 2.8e32
2 E34N34
(-451",580") 		E59-E07
(52) 		3.0 1.2 2.3e33
3 E28S66
(-180",-879") 		E78-W23
(101) 		2.4 -1.0 -4.7e33
4 W40S45
(445",-664") 		W18-W56
(38) 		2.3 -1.0 -2.0e33
5 E28N58
(-238",849") 		E68-E01
(67) 		1.9 0.6 1.8e33
6 W07N19
(112",359") 		W02-W11
(9) 		0.3 0.8 6.6e31
7 E30S25
(-448",-382") 		E33-E27
(6) 		0.1 -0.5 -3.1e31
8 E03N04
(-51",105") 		E05-E00
(5) 		0.1 -1.4 -1.5e31
9 E41S05
(-640",-45") 		E44-E38
(6) 		0.0 -1.2 -2.5e31

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 27-Dec-2017 20:30 UT .