26 April 2019
20190425 Week Rotation Today Rotation Week 20190427

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12S24
(-188",-319")
E49-W35
(84)
14.6 -0.2 -6.8e20
2 E10S69
(-58",-858")
E55-W83
(138)
3.0 -0.8 -4.0e21
3 W16N68
(99",909")
E43-W57
(100)
0.7 1.1 3.0e21
4 W60S33
(697",-480")
W55-W70
(15)
0.2 -0.9 -2.1e20
5 W36N18
(532",355")
W33-W39
(6)
0.1 -0.7 -2.5e19
6 W11N21
(163",414")
W09-W12
(3)
0.0 -0.9 -1.1e19
7 E29N08
(-463",193")
E31-E28
(3)
0.0 -0.7 -9.3e18
8 E11N05
(-188",166")
E13-E10
(3)
0.0 -0.9 -7.7e18

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 26-Apr-2019 22:00 UT .