4 July 2020
⇐20200703 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200705⇒

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 W36N60
(278",792") 		E52-W44
(96) 		3.3 0.9 9.5e20
2 W09N01
(150",-45") 		E12-W20
(32) 		2.7 0.0 1.0e19
3 E06S65
(-42",-875") 		E48-W64
(112) 		1.7 -0.9 -6.1e20
4 W36N09
(543",101") 		W33-W37
(4) 		0.1 -1.0 -1.5e19
5 E39S08
(-592",-169") 		E41-E37
(4) 		0.0 -1.1 -1.0e19

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 4-Jul-2020 19:00 UT .