13 December 2017
⇐20171212 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171214⇒

NOAA
1 Active Region
12691

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 E14N18
(-228",309") 		E30-W09
(39) 		4.4 1.2 1.4e33
2 W25N61
(202",857") 		E67-W64
(131) 		4.2 0.6 4.2e33
3 W23S27
(344",-434") 		E01-W35
(36) 		3.0 -0.3 -2.9e32
4 -257
(-903",E00S69") 		118
(3.4e05) 		-1.0 5.1 1.7e34
5 W36S13
(565",-206") 		W29-W46
(17) 		0.7 -0.6 -1.6e32
6 E22S11
(-356",-177") 		E28-E17
(11) 		0.4 1.0 1.1e32
7 E39N16
(-587",283") 		E45-E33
(12) 		0.2 -1.0 -6.8e31
8 E06S27
(-88",-431") 		E08-E04
(4) 		0.1 1.0 1.7e31

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 13-Dec-2017 20:30 UT .