1 April 2018
⇐20180331 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180402⇒

NOAA
1 Active Region
12703

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 W08N48
(92",787") 		E59-W54
(113) 		8.4 0.6 4.7e33
2 W18S70
(102",-861") 		E86-W75
(161) 		3.1 -0.4 -2.1e33
3 W00S28
(6",-351") 		E18-W15
(33) 		3.0 -0.1 -1.1e32
4 W01N17
(11",391") 		E06-W07
(13) 		0.3 1.2 1.0e32
5 E66N01
(-876",67") 		E77-E58
(19) 		0.3 -0.6 -2.6e32
6 W25N09
(405",252") 		W22-W28
(6) 		0.1 -0.8 -3.4e31
7 W05N22
(81",459") 		W02-W08
(6) 		0.1 -1.6 -5.2e31
8 W19S02
(312",72") 		W16-W22
(6) 		0.1 2.8 5.1e31
9 E07S19
(-105",-206") 		E08-E04
(4) 		0.0 -1.3 -1.2e31
10 E24N14
(-381",335") 		E27-E22
(5) 		0.0 1.9 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 1-Apr-2018 23:30 UT .