26 October 2019
20191025 Week Rotation Today Rotation Week 20191027

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Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E11S07
(-187",-200")
E52-W44
(96)
8.9 -0.3 -3.8e20
2 W23N72
(115",891")
E75-W66
(141)
1.8 1.0 7.8e20
3 W55N16
(758",219")
W39-W70
(31)
1.6 0.8 3.2e20
4 E32S61
(-249",-876")
E57-E02
(55)
1.1 -0.7 -3.7e20
5 E25S33
(-339",-593")
E41-E11
(30)
1.0 -0.8 -1.9e20
6 E67N64
(-388",852")
E69-E65
(4)
0.2 0.3 4.2e19
7 E33N19
(-499",253")
E37-E29
(8)
0.1 -0.6 -1.3e19
8 E39N24
(-552",336")
E42-E35
(7)
0.1 -0.5 -1.0e19
9 E18N34
(-243",476")
E20-E15
(5)
0.1 -0.6 -9.5e18
10 E10N11
(-172",96")
E12-E09
(3)
0.1 -1.0 -8.2e18
11 W22N43
(271",597")
W20-W25
(5)
0.0 -1.3 -1.3e19
12 E39S11
(-592",-251")
E41-E36
(5)
0.0 -1.2 -1.1e19
13 W45N06
(681",34")
W43-W47
(4)
0.0 -1.4 -1.1e19

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-Oct-2019 23:40 UT .