4 June 2018
⇐20180603 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180605⇒

NOAA
1 Active Region
12712

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 W05N12
(77",207") 		E13-W25
(38) 		3.6 -0.2 -1.6e20
2 W17N61
(130",832") 		E53-W69
(122) 		3.1 1.0 4.3e21
3 W36N14
(539",232") 		W32-W42
(10) 		0.2 -0.7 -5.7e19
4 W41S74
(170",-908") 		W32-W62
(30) 		0.1 -0.9 -3.4e20

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-Jun-2018 15:30 UT .