9 May 2018
⇐20180508 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180510⇒

NOAA
2 Active Regions
12708
12709

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 W36N15
(534",294") 		E02-W69
(71) 		5.9 -0.5 -1.2e33
2 W44N62
(310",855") 		W05-W74
(69) 		1.2 1.1 4.6e33
3 W04S76
(16",-906") 		E66-W73
(139) 		0.6 -1.1 -2.3e33
4 E39N61
(-293",848") 		E60-E32
(28) 		0.4 1.0 9.8e32
5 E29N29
(-400",503") 		E32-E25
(7) 		0.1 -1.4 -6.1e31
6 E21S25
(-315",-349") 		E24-E19
(5) 		0.1 -0.8 -1.4e31
7 E06S33
(-87",-471") 		E08-E04
(4) 		0.1 1.2 2.2e31

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 9-May-2018 15:30 UT .