19 February 2017
⇐20170218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170220⇒

NOAA
1 Active Region
12636

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 W01S26
(22",-315") 		E35-W73
(108) 		8.7 1.3 2.5e33
2 W06N62
(45",907") 		E38-W53
(91) 		1.4 0.5 1.8e33
3 W29N45
(333",760") 		W23-W35
(12) 		0.4 0.5 1.8e32
4 W22S82
(50",-940") 		E12-W40
(52) 		0.1 -1.1 -7.4e32
5 E03S30
(-46",-384") 		E05-E01
(4) 		0.0 -1.1 -1.0e31

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 19-Feb-2017 20:30 UT .