7 December 2018
⇐20181206 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181208⇒

NOAA
1 Active Region
12729

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 W18S33
(254",-536") 		E73-W49
(122) 		18.6 -0.5 -3.7e21
2 E33N69
(-192",909") 		E63-W37
(100) 		1.3 1.1 4.9e21
3 E20S01
(-337",-21") 		E25-E14
(11) 		0.6 -0.8 -1.2e20
4 W26S39
(329",-610") 		W17-W32
(15) 		0.6 -1.5 -4.4e20
5 W44N09
(667",153") 		W37-W50
(13) 		0.2 -1.2 -1.4e20
6 E04N26
(-68",425") 		E08-E01
(7) 		0.1 -1.1 -3.3e19
7 W40S09
(613",-154") 		W37-W42
(5) 		0.0 -6.4 -1.1e20

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-Dec-2018 20:30 UT .