27 July 2020
⇐20200726 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200728⇒

NOAA
1 Active Region
12767

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 W02N25
(34",318") 		E53-W50
(103) 		12.3 0.3 6.0e20
2 W02N65
(15",819") 		E61-W34
(95) 		4.1 0.9 1.1e21
3 W23S54
(217",-814") 		E13-W49
(62) 		1.9 -0.9 -5.9e20
4 W34N35
(435",477") 		W23-W47
(24) 		0.6 0.8 1.0e20
5 W57S08
(784",-175") 		W48-W66
(18) 		0.5 -0.4 -4.6e19
6 W26S30
(365",-543") 		W21-W31
(10) 		0.1 -1.2 -3.0e19
7 W15S26
(220",-485") 		W12-W18
(6) 		0.1 -1.9 -3.1e19
8 W44S25
(599",-460") 		W41-W48
(7) 		0.1 -1.5 -2.2e19
9 W54N12
(750",145") 		W51-W57
(6) 		0.0 -0.5 -4.9e18

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-Jul-2020 19:00 UT .