21 January 2018
⇐20180120 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180122⇒

NOAA
1 Active Region
12696

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 E33S50
(-335",-703") 		E61-W11
(72) 		3.6 -1.1 -2.9e33
2 E19S18
(-308",-228") 		E30-W01
(31) 		2.2 -0.0 -2.4e31
3 W54N09
(781",196") 		W38-W75
(37) 		1.4 -1.6 -1.9e33
4 W29S11
(466",-107") 		W22-W37
(15) 		1.0 -0.8 -2.5e32
5 W29S75
(123",-918") 		E45-W81
(126) 		0.9 -1.2 -3.3e33
6 E35N19
(-524",384") 		E40-E23
(17) 		0.6 1.1 3.0e32
7 E55N32
(-676",561") 		E63-E46
(17) 		0.3 1.0 4.8e32
8 W20S24
(305",-318") 		W17-W23
(6) 		0.3 -0.8 -6.7e31
9 E34N04
(-538",143") 		E36-E31
(5) 		0.1 -0.8 -2.3e31
10 E36S12
(-555",-138") 		E38-E34
(4) 		0.1 -2.8 -6.3e31

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 21-Jan-2018 20:30 UT .