8 January 2018
⇐20180107 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180109⇒

NOAA
1 Active Region
12693

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 E09N59
(-76",867") 		E60-W53
(113) 		2.6 0.9 3.3e33
2 E20N18
(-315",357") 		31
(7.5e04) 		1.2 8.4 6.3e33
3 W04S69
(22",-885") 		E76-W78
(154) 		2.4 -1.4 -5.3e33
4 W45N46
(480",738") 		W28-W55
(27) 		1.2 0.6 1.1e33
5 W29S10
(470",-105") 		W26-W34
(8) 		0.2 -1.4 -9.1e31
6 W24N46
(269",748") 		W20-W28
(8) 		0.1 -1.0 -8.0e31

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 8-Jan-2018 20:30 UT .