27 May 2020
⇐20200526 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200528⇒

NOAA
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Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W12S65
(79",-853") 		E67-W66
(133) 		3.1 -1.0 -4.9e21
2 W08N02
(127",59") 		E11-W19
(30) 		1.8 -0.2 -6.5e19
3 E35N60
(-274",826") 		E61-E22
(39) 		0.9 0.4 7.1e20
4 E35S36
(-443",-540") 		E38-E31
(7) 		0.2 -1.1 -1.1e20
5 E24S17
(-369",-267") 		E27-E22
(5) 		0.0 -1.2 -1.6e19
6 W23S42
(277",-625") 		W21-W25
(4) 		0.0 -2.2 -4.9e19

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-May-2020 19:30 UT .