18 June 2020
20200617 Week Rotation Today Rotation Week 20200619

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E10N05
(-157",53")
E24-W10
(34)
3.0 0.1 4.1e19
2 W09S23
(130",-393")
E05-W20
(25)
2.6 0.1 3.8e19
3 W21S65
(139",-867")
E52-W57
(109)
1.9 -0.6 -2.3e21
4 E22N66
(-141",855")
E61-W49
(110)
1.8 0.9 3.0e21
5 E19S43
(-228",-664")
E22-E16
(6)
0.1 -0.9 -3.9e19
6 E49S65
(-304",-861")
E61-E38
(23)
0.1 -2.4 -6.4e20
7 E65S52
(-528",-750")
E67-E66
(1)
0.0 -0.8 -2.2e20
8 W18N02
(286",16")
W16-W19
(3)
0.0 -1.5 -1.4e19
9 W45N14
(649",209")
W43-W47
(4)
0.0 -1.6 -3.5e19

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 18-Jun-2020 19:00 UT .