16 February 2017
⇐20170215 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170217⇒

NOAA
3 Active Regions
12635
12636
12634

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 W13S30
(186",-385") 		E38-W57
(95) 		6.3 0.9 1.6e33
2 E19N53
(-193",838") 		E38-W04
(42) 		1.8 0.4 1.1e33
3 E58S16
(-791",-205") 		E69-E39
(30) 		1.5 1.7 2.5e33
4 W71S64
(405",-849") 		W56-W86
(30) 		0.1 -0.3 -1.4e32
5 W31S83
(57",-946") 		E07-W53
(60) 		0.1 -0.5 -3.2e32

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 16-Feb-2017 20:30 UT .