15 January 2017
⇐20170114 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170116⇒

NOAA
2 Active Regions
12625
12626

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 E08N48
(-90",771") 		E65-W38
(103) 		6.7 0.4 2.0e33
2 E29S19
(-448",-252") 		E61-E05
(56) 		4.9 1.3 2.1e33
5 W34N28
(481",508") 		W19-W49
(30) 		1.4 0.8 6.0e32
4 W35S72
(169",-907") 		W10-W67
(57) 		0.6 -1.0 -1.8e33
6 E22N25
(-334",471") 		E26-E17
(9) 		0.3 -0.8 -8.4e31

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 15-Jan-2017 20:30 UT .