4 May 2018
⇐20180503 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180505⇒

NOAA
0 Active Regions

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 E01N02
(-21",105") 		E40-W28
(68) 		9.4 -1.6 -2.5e33
2 W17N59
(140",847") 		E54-W51
(105) 		3.2 0.8 4.2e33
3 E07S74
(-34",-894") 		E78-W66
(144) 		1.3 -1.0 -3.3e33
4 E40N20
(-582",372") 		E45-E36
(9) 		0.2 -0.6 -5.7e31
5 W06S47
(69",-657") 		W04-W08
(4) 		0.0 1.3 3.0e31

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 4-May-2018 15:30 UT .