28 July 2019
⇐20190727 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190729⇒

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 E02S09
(-27",-231") 		E14-W14
(28) 		3.1 -1.7 -8.6e20
2 E04N70
(-21",852") 		E87-W60
(147) 		3.1 1.2 1.3e21
3 W01S63
(6",-878") 		E44-W51
(95) 		1.2 -0.7 -3.4e20
4 E59N19
(-766",268") 		E69-E52
(17) 		0.5 1.4 1.9e20
5 E54S11
(-754",-232") 		E61-E48
(13) 		0.4 0.5 5.6e19

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 28-Jul-2019 23:30 UT .