25 October 2019
20191024 Week Rotation Today Rotation Week 20191026

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18S19
(-286",-383")
E42-W22
(64)
8.3 -0.4 -6.2e20
2 W43N17
(635",225")
W21-W63
(42)
5.3 0.8 8.3e20
3 W11N71
(59",885")
E78-W86
(164)
2.2 0.9 7.8e20
4 E40S62
(-291",-879")
E55-E10
(45)
0.5 -1.0 -2.8e20
5 E39S32
(-514",-568")
E47-E32
(15)
0.3 -0.9 -6.9e19
6 E41S07
(-636",-174")
E45-E39
(6)
0.1 -0.6 -1.4e19
7 W40S18
(597",-357")
W37-W44
(7)
0.1 -1.0 -1.8e19
8 E37N13
(-571",156")
E40-E35
(5)
0.1 -0.5 -7.1e18
9 E36N10
(-564",102")
E39-E34
(5)
0.0 -0.7 -6.3e18

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 25-Oct-2019 23:40 UT .