1 May 2019
⇐20190430 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190502⇒

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 W35S25
(504",-344") 		W06-W54
(48) 		3.8 -0.2 -3.6e20
2 E07S68
(-45",-853") 		E80-W61
(141) 		3.4 -0.8 -4.3e21
3 E12S37
(-157",-514") 		E15-E09
(6) 		0.1 1.3 6.2e19
4 E36S17
(-538",-226") 		E39-E33
(6) 		0.1 -1.0 -2.9e19
5 E20N32
(-277",564") 		E22-E19
(3) 		0.1 -0.5 -1.6e19
6 E47S13
(-682",-176") 		E51-E44
(7) 		0.0 -0.6 -1.6e19
7 W12S18
(186",-227") 		W10-W14
(4) 		0.0 -1.0 -8.3e18

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 1-May-2019 22:00 UT .