15 January 2018
⇐20180114 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180116⇒

NOAA
1 Active Region
12694

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 E25N13
(-401",288") 		E37-E06
(31) 		2.8 -2.8 -2.4e33
2 E31S71
(-163",-897") 		E57-W24
(81) 		1.2 -1.1 -3.2e33
3 W53N54
(461",813") 		W56-W66
(10) 		0.3 0.6 7.5e32
4 W44S74
(192",-917") 		W59-W68
(9) 		0.3 -0.9 -9.4e32
5 W15S08
(244",-55") 		W11-W17
(6) 		0.1 -1.1 -1.4e31
6 E01N03
(-23",129") 		E04-W02
(6) 		0.1 -1.0 -1.0e31
7 E42N17
(-622",344") 		E46-E37
(9) 		0.0 -0.7 -1.9e31
8 W11S06
(189",-22") 		W10-W13
(3) 		0.0 -1.8 -1.4e31
9 W25N20
(383",406") 		W23-W26
(3) 		0.0 1.6 2.0e31

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 15-Jan-2018 20:30 UT .