4 October 2018
⇐20181003 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181005⇒

NOAA
1 Active Region
12723

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 E22N32
(-306",427") 		E60-W11
(71) 		12.1 1.1 4.7e21
2 W40N75
(160",899") 		E72-W86
(158) 		1.3 1.0 4.3e21
3 E44S22
(-612",-438") 		E47-E38
(9) 		0.2 -2.2 -3.3e20
4 E32N24
(-462",300") 		E35-E29
(6) 		0.1 -0.6 -1.8e19
5 W52N02
(755",-37") 		W48-W55
(7) 		0.1 -1.4 -7.9e19

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 4-Oct-2018 23:10 UT .