27 June 2020
20200626 Week Rotation Today Rotation Week 20200628

NOAA
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Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E08S15
(-134",-287")
E42-W28
(70)
11.0 -0.3 -5.5e20
2 E34N19
(-498",279")
E48-E21
(27)
2.1 0.1 2.5e19
3 W31S62
(228",-852")
E33-W63
(96)
1.8 -0.9 -7.3e20
4 E29N70
(-157",874")
E76-W71
(147)
1.4 0.9 5.8e20
5 E05N42
(-62",607")
E11-W04
(15)
0.4 0.5 3.9e19
6 W48N04
(700",36")
W42-W57
(15)
0.2 -0.5 -2.5e19
7 E56S62
(-364",-844")
E66-E52
(14)
0.1 -1.5 -1.2e20
8 W17S19
(262",-345")
W15-W19
(4)
0.1 -1.3 -1.8e19
9 E44N06
(-648",73")
E47-E40
(7)
0.1 -0.5 -6.3e18
10 W23S19
(354",-342")
W21-W24
(3)
0.0 -0.7 -5.2e18
11 W46S06
(679",-127")
W44-W48
(4)
0.0 -1.1 -9.5e18
12 W37N13
(552",172")
W35-W38
(3)
0.0 -1.1 -8.0e18

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 27-Jun-2020 19:00 UT .